HP 255 G7 Maintenance And Service Manual Download Page 76

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Top cover with keyboard

The top cover with keyboard remains after removing all other spared parts from the computer.

In this section, the first table provides the main spare part number for the keyboards. The second table
provides the country codes.

Table 6-17

Spare part description and number

Description

Spare part number

Keyboard, jet black

L50000-xx1

Keyboard, no backlight, silver

L50001-xx1

Table 6-18

Spare part country codes

For use in country
or region

Spare part
number

For use in country
or region

Spare part
number

For use in country
or region

Spare part
number

Belgium

-A41

Hungary

-211

Slovenia

-BA1

Bulgaria

-261

India

-D61

South Korea

-AD1

Chile

-161

Israel

-BB1

Spain

-071

Czech Republic/Slovakia

-FL1

Italy

-061

Switzerland

-BG1

Denmark, Finland, and
Norway

-DH1

Japan

-291

Taiwan

-AB1

French Canada

-DB1

The Netherlands

-B31

Thailand

-281

France

-051

Portugal

-131

Turkey

-141

Germany

-041

Russia

-251

United Kingdom

-031

Greece

-151

Saudi Arabia

-171

United States

-001

Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

Summary of Contents for 255 G7

Page 1: ...Maintenance and Service Guide HP 255 G7 Notebook PC ...

Page 2: ...s Some features may not be available on your computer Not all features are available in all editions or versions of Windows Systems may require upgraded and or separately purchased hardware drivers software or BIOS update to take full advantage of Windows functionality Windows 10 is automatically updated which is always enabled ISP fees may apply and additional requirements may apply over time for...

Page 3: ...hat should only be accessed by an authorized service provider See Chapter 5 Removal and replacement procedures for Customer Self Repair parts for details Accessing parts described in Chapter 6 Removal and replacement procedures for Authorized Service Provider only parts can damage the computer or void your warranty iii ...

Page 4: ...iv Important Notice about Customer Self Repair Parts ...

Page 5: ...w another hard surface such as an adjoining optional printer or a soft surface such as pillows or rugs or clothing to block airflow Also do not allow the AC adapter to contact the skin or a soft surface such as pillows or rugs or clothing during operation The device and the AC adapter comply with the user accessible surface temperature limits defined by the International Standard for Safety of Inf...

Page 6: ...vi Safety warning notice ...

Page 7: ...s 19 Miscellaneous parts 20 Mass storage devices 21 4 Removal and replacement procedures preliminary requirements 22 Tools required 22 Service considerations 22 Plastic parts 22 Cables and connectors 22 Drive handling 23 Workstation guidelines 23 Electrostatic discharge information 23 Generating static electricity 24 Preventing electrostatic damage to equipment 24 Personal grounding methods and eq...

Page 8: ...board 45 TouchPad module 46 Fan 48 Heat sink assembly 49 Display assembly 53 System board 62 Speakers 64 Power connector cable DC in 65 Top cover with keyboard 66 7 Computer Setup BIOS TPM and HP Sure Start 67 Using Computer Setup 67 Starting Computer Setup 67 Navigating and selecting in Computer Setup 67 Restoring factory settings in Computer Setup 67 Updating the BIOS 68 Determining the BIOS ver...

Page 9: ...agnostics UEFI version 74 Downloading Remote HP PC Hardware Diagnostics UEFI by product name or number 74 Customizing Remote HP PC Hardware Diagnostics UEFI settings 74 9 Backing up restoring and recovering 76 Backing up information and creating recovery media 76 Using Windows tools 76 Using the HP Cloud Recovery Download Tool to create recovery media select products only 76 Restoring and recovery...

Page 10: ...Using HP Sure Start select models only 90 13 Recycling 91 Index 92 x ...

Page 11: ...lerated processor Ryzen 3 2200U 2 5 GHz turbo up to 3 4 GHz 1 MB L3 cache DDR4 2400 MHz dual core 15 W Graphics Supports HD decode DX12 HDMI Internal graphics AMD Radeon Vega 3 Mobile Graphics Ryzen 3 processor AMD Radeon R5 Graphics A9 processor AMD Radeon R4 Graphics A6 processor AMD Radeon R2 Graphics E2 processor Panel 39 6 cm 15 6 in WLED anti glare SVA eDP slim flat 3 2 mm 220 nits High defi...

Page 12: ...or LED USB 2 0 f2 4 640 480 by 30 frames per second Single digital microphone Audio Audio Control Panel HP Audio Control Dual speakers Ethernet Ethernet Integrated 10 100 1000 NIC Wireless networking Integrated Wireless options with single antenna M 2 PCIe Realtek RTL8821CE 802 11ac 1 1 WiFi Bluetooth 4 2 Combo Adapter MU MIMO supported External media cards HP Multi Format Digital Media Card Reade...

Page 13: ...rge AC adapter barrel type 65 W Smart nPFC 4 5 mm EM 45 W Smart nPFC right angle 4 5 mm Power cord C5 1 m conventional Security Kensington Mini Security Lock Supports firmware based Trusted Platform Module fTPM 2 0 Operating system FreeDOS 2 0 Windows 10 Home 64 Windows 10 Home 64 Chinese Market CPPP Windows 10 Home 64 High End Chinese Market CPPP Windows 10 Home 64 Plus Windows 10 Home 64 Plus Si...

Page 14: ...Table 1 1 Product components and their descriptions continued Category Description AC adapter Optical drive 4 Chapter 1 Product description ...

Page 15: ...onal memory cards that enable you to store manage share or access information To insert a card 1 Hold the card label side up with connectors facing the computer 2 Insert the card into the memory card reader and then press in on the card until it is firmly seated To remove a card Pull to remove the card from the memory card reader 4 USB port Connects a USB device such as a cell phone camera activit...

Page 16: ...a high speed High Definition Multimedia Interface HDMI device 5 USB SuperSpeed ports 2 Connect a USB device such as a cell phone camera activity tracker or smartwatch and provide high speed data transfer 6 Audio out headphone Audio in microphone combo jack Connects optional powered stereo speakers headphones earbuds a headset or a television audio cable Also connects an optional headset microphone...

Page 17: ... depending on the camera hardware and software installed on your product 4 Internal microphone Records sound The antennas are not visible from the outside of the computer For optimal transmission keep the areas immediately around the antennas free from obstructions For wireless regulatory notices see the section of the Regulatory Safety and Environmental Notices that applies to your country or reg...

Page 18: ...ption 1 TouchPad zone Reads your finger gestures to move the pointer or activate items on the screen 2 Left TouchPad button Functions like the left button on an external mouse 3 Right TouchPad button Functions like the right button on an external mouse 8 Chapter 2 Getting to know your computer ...

Page 19: ...Lights and their descriptions Component Description 1 Caps lock light On Caps lock is on which switches the key input to all capital letters 2 Mute light On Computer sound is off Off Computer sound is on Keyboard area 9 ...

Page 20: ...he power button results in the loss of unsaved information If the computer has stopped responding and shutdown procedures are ineffective press and hold the power button down for at least 5 seconds to turn off the computer To learn more about your power settings see your power options Right click the Power icon and then select Power Options 2 Speakers 2 Produce sound 3 Vent Enables airflow to cool...

Page 21: ...eys Execute frequently used system functions NOTE On select products the f5 action key turns the keyboard backlight feature off or on 5 num lock key Alternates between the navigational and numeric functions on the integrated numeric keypad 6 Integrated numeric keypad A separate keypad to the right of the alphabet keyboard When num lock is pressed the keypad can be used like an external numeric key...

Page 22: ...e from the computer display to the monitor display to a simultaneous display on both the computer and the monitor Turns the keyboard backlight off or on NOTE To conserve battery power turn off this feature Mutes or restores speaker sound Decreases speaker volume incrementally while you hold down the key Increases speaker volume incrementally while you hold down the key Plays the previous track of ...

Page 23: ... Component Description Vent Enables airflow to cool internal components NOTE The computer fan starts up automatically to cool internal components and prevent overheating It is normal for the internal fan to cycle on and off during routine operation Bottom 13 ...

Page 24: ...label Provides important information to identify your computer When contacting support you may be asked for the serial number the product number or the model number Locate this information before you contact support Table 2 10 Service label components Component 1 HP product name 2 Model number 3 Product ID 4 Serial number 5 Warranty period Regulatory label s Provide s regulatory information about ...

Page 25: ...supported parts for your computer go to http partsurfer hp com select your country or region and then follow the on screen instructions NOTE Details about your computer including model serial number product key and length of warranty are on the service tag at the bottom of your computer See Labels on page 14 for details Computer major components 15 ...

Page 26: ...are part kits include replacement thermal material All system boards use the following part numbers xxxxxx 001 Non Windows operating systems xxxxxx 601 Windows operating system AMD Ryzen 3 2200U processor L50003 xx1 AMD A9 9425 processor L50004 xx1 AMD A6 9225 processor L50005 xx1 AMD A4 9125 processor L54792 xx1 AMD E2 9000e processor L50006 xx1 8 Solid state drive NOTE For spare part information...

Page 27: ...state drive bracket L20458 001 19 Hard drive NOTE For spare part information see Mass storage devices on page 21 20 DVD RW Double Layer Writer L50025 001 21 Bottom cover For use in models with an optical drive Asteroid silver L49982 001 Dark ash silver L49983 001 For use in models without an optical drive Asteroid silver L49984 001 Dark ash silver L49985 001 22 Rubber feet Front feet Asteroid silv...

Page 28: ...B card reader board cable L20452 001 2 TouchPad button board cable L20451 001 3 TouchPad cable L20450 001 4 Hard drive solid state drive cable L20456 001 5 Display cable Display cable non touch HD L20443 001 Display cable non touch FHD L23064 001 18 Chapter 3 Illustrated parts catalog ...

Page 29: ... 001 2 Display bezel L20421 001 3 Display panel HD L50021 001 FHD L50022 001 Miscellaneous Display Kit includes gaskets 4 and rubber corner positioning tools 4 not illustrated L23065 001 Display panel stretchable adhesive tape not illustrated L29080 001 4 Hinge Kit includes left and right hinges L20420 001 5 Display cable Non touch HD L20443 001 Display assembly subcomponents 19 ...

Page 30: ...scriptions Component Spare part number AC adapter 65 W AC adapter nPFC SMART RC 4 5 mm EM 913691 850 45 W AC adapter nPFC SMART RC 4 5 mm non slim 741727 001 Power cord C5 1 m For use in Denmark L19360 001 For use in Europe L19361 001 For use in Israel L19362 001 For use in Japan L19365 001 For use in North America L19367 001 For use in the People s Republic of China L19368 001 For use in South Af...

Page 31: ... drive bracket L20459 001 4 Hard drive 7 mm 1 TB 5400 rpm L30422 005 500 GB 7200 rpm 703267 005 500 GB 5400 rpm 778186 005 5 Hard drive bracket L20455 001 6 Hard drive connector board L20454 001 7 Hard drive solid state drive cable L20456 001 8 Solid state drive bracket L20458 001 9 Solid state drive connector board L20457 001 10 Solid state drive M 2 256 GB SATA 3 TLC L50020 001 128 GB SATA 3 TLC...

Page 32: ...sive force during disassembly and reassembly can damage plastic parts Cables and connectors CAUTION When servicing the computer be sure that cables are placed in their proper locations during the reassembly process Improper cable placement can damage the computer Cables must be handled with extreme care to avoid damage Apply only the tension required to unseat or seat the cables during removal and...

Page 33: ...r the workstation with approved static shielding material Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment Use conductive field service tools such as cutters screw drivers and vacuums When fixtures must directly contact dissipative surfaces use fixtures made only of static safe materials Keep the work area free of nonconductive materials...

Page 34: ...0 V Removing DIPs from vinyl tray Removing DIPs from Styrofoam Removing bubble pack from PCB Packing PCBs in foam lined box 2 000 V 3 500 V 7 000 V 5 000 V 4 000 V 5 000 V 20 000 V 11 000 V 11 500 V 14 500 V 26 500 V 21 000 V Electronic components are then multi packaged inside plastic tubes trays or Styrofoam NOTE As little as 700 volts can degrade a product Preventing electrostatic damage to equ...

Page 35: ... damage at the work area use the following precautions Cover the work surface with approved static dissipative material Provide a wrist strap connected to the work surface and properly grounded tools and equipment Use static dissipative mats foot straps or air ionizers to give added protection Handle electrostatic sensitive components parts and assemblies by the case or PCB laminate Handle them on...

Page 36: ...ive or approved containers or packaging Keep ESD sensitive parts in their containers until the parts arrive at static free workstations Place items on a grounded surface before removing items from their containers Always be properly grounded when touching a component or assembly Store reusable ESD sensitive parts from assemblies in protective packaging or nonconductive foam Use transporters and co...

Page 37: ...ter If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it down through the operating system 2 Disconnect the power from the computer by unplugging the power cord from the computer 3 Disconnect all external devices from the computer Component replacement procedures NOTE Details about your computer including model serial number product key and length o...

Page 38: ... Optical drive bezel dark ash silver L49989 001 Before removing the optical drive follow these steps Prepare the computer for disassembly Preparation for disassembly on page 27 Remove the optical drive 1 Remove the Phillips M2 5 9 0 screw 1 that secures the drive to the computer 2 Slide the optical drive out of the computer 2 28 Chapter 5 Removal and replacement procedures for Customer Self Repair...

Page 39: ...emove the bezel from the front of the optical drive a Insert a paper clip into the release hole on the front of the bezel 1 The left side of the bezel rotates outward 2 b Press the tab to release the bezel from the drive 3 c Rotate the side of the bezel 4 and then remove it 5 Reverse this procedure to reassemble and install the optical drive Component replacement procedures 29 ...

Page 40: ...uct key and length of warranty are on the service tag at the bottom of your computer See Labels on page 14 for details NOTE HP continually improves and changes product parts For complete and current information on supported parts for your computer go to http partsurfer hp com select your country or region and then follow the on screen instructions There are as many as 46 screws that must be remove...

Page 41: ...er L49985 001 Front rubber feet Asteroid silver L20407 001 Dark ash silver L20406 001 Rear rubber feet Asteroid silver L20414 001 Dark ash silver L20413 001 1 Prepare the computer for disassembly Preparation for disassembly on page 27 2 Remove the optical drive see Optical drive on page 28 Remove the bottom cover 1 Peel the rubber feet off the bottom of the computer 1 2 Remove the 10 Phillips M2 5...

Page 42: ...near the middle bottom of the bottom cover 1 pry the cover up to remove it 2 Reverse this procedure to install the bottom cover 32 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 43: ... drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 Remove the battery 1 Remove the three Phillips M2 0 8 0 screws 1 that secure the battery to the computer 2 Remove the battery from the computer 2 Reverse this procedure to install the battery When installing the battery be sure to install screws in the proper locations The following image shows the locations around the battery...

Page 44: ...34 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 45: ...gree angle 2 Grasp the edge of the memory module 2 and then gently pull the module out of the slot Use the same procedure to remove both memory modules CAUTION To prevent damage to the memory module hold the memory module by the edges only Do not touch the components on the memory module To protect a memory module after removal place it in an electrostatic safe container Install the memory modules...

Page 46: ...3 Gently press down on the module edges until the side retention clips snap into place 3 36 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 47: ...1 Before removing the hard drive follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 27 2 Remove the optical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the hard drive 1 Slide the hard drive away from the connector 1 and then lift the hard drive out of the compu...

Page 48: ...ard drive remove the two Phillips M3 0 3 0 screws 1 and then lift the bracket off the drive 2 Reverse this procedure to reassemble and install the hard drive 38 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 49: ...r for disassembly Preparation for disassembly on page 27 2 Remove the optical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the solid state drive Remove the Phillips M2 0 3 0 screw 1 and then pull the solid state drive module from the socket 2 Reverse this procedure to install the solid state drive Compon...

Page 50: ...ptical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 5 Remove the solid state drive see Solid state drive on page 39 Remove the solid state drive bracket and connector board 1 Slide the bracket toward the side of the computer 1 and then lift the bracket out of the computer 2 2 Disconnect the solid state connecto...

Page 51: ...4 Remove the connector board from the computer 3 Reverse this procedure to install the solid state drive bracket and connector board Component replacement procedures 41 ...

Page 52: ...or disassembly on page 27 2 Remove the optical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the WLAN module 1 Disconnect the two antenna cables from the module 1 2 Remove the Phillips M2 0 3 0 screw 2 and then pull the module out of the socket 3 Reverse this procedure to install the WLAN module 42 Chapte...

Page 53: ...tical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 5 Remove the hard drive see Hard drive on page 37 Remove the hard drive connector 1 Disconnect the cable from the system board ZIF connector 1 2 Remove the Phillips M2 0 3 0 screw 2 that secures the board to the computer 3 Remove the board from the computer 3 R...

Page 54: ...y on page 27 2 Remove the optical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the USB card reader board 1 Disconnect the cable from the ZIF connector on the USB board 1 2 Remove the Phillips M2 0 3 0 screw 2 and then remove the board from the computer 3 Reverse this procedure to replace the USB card rea...

Page 55: ...e on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the TouchPad button board 1 Disconnect the system board cable from the ZIF connector on the TouchPad button board 1 2 Disconnect the TouchPad cable from the ZIF connector on the TouchPad button board 2 3 Remove the two Phillips M2 0 3 0 screws 3 that secure the board to the compute...

Page 56: ...move the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 To remove the TouchPad module 1 Disconnect the TouchPad cable from the ZIF connector on the TouchPad 1 and the TouchPad button board cable from the ZIF connector on the system board 2 2 Peel the tape off the TouchPad 1 3 Starting in the corner use a plastic non marking tool to pry up the TouchPad module t...

Page 57: ...e pry the TouchPad module loose and then remove it from the computer 3 NOTE The TouchPad module may be very tight and difficult to remove Reverse this procedure to install the TouchPad module Component replacement procedures 47 ...

Page 58: ...drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the fan 1 Disconnect the fan cable from the system board 1 2 Remove the Phillips M2 5 6 0 screw 2 that secures the fan to the computer 3 Lift the fan from the computer 3 Reverse this procedure to install the fan 48 Chapter 6 Removal and replacement procedures ...

Page 59: ...oving the heat sink follow these steps 1 Prepare the computer for disassembly Preparation for disassembly on page 27 2 Remove the optical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 To remove the heat sink assembly from products with integrated UMA graphics 1 In the order indicated on the heat sink assembly re...

Page 60: ...ed with the heat sink and system board spare part kits To remove the heat sink assembly from products with discrete graphics 1 In the order indicated on the heat sink assembly remove the six Phillips M2 0 3 0 screws 1 that secure the heat sink to the computer 2 Lift the heat sink assembly from the computer 2 50 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 61: ...emoved Replacement thermal material is included with the heat sink and system board spare part kits To remove the heat plate from fanless models 1 In the order indicated on the heat plate remove the five Phillips M2 0 3 0 screws 1 that secure the heat plate to the computer 2 Lift the heat plate from the computer 2 Component replacement procedures 51 ...

Page 62: ...ard component 2 each time the heat plate is removed Replacement thermal material is included with the heat plate and system board spare part kits Reverse this procedure to install the heat plate or heat sink assembly 52 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 63: ...ge 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 Remove the display assembly 1 Lift the tape from the display connector on the system board 1 2 Disconnect the cable from the connector 2 3 Remove the cable from the clip 3 4 Remove the four Phillips M2 5 6 0 screws 1 from the display hinges 5 Remove the Phillips broad head M2 0 2 0 screw 2 from ...

Page 64: ... covers are available using the following spare part numbers L49990 001 Asteroid silver L49991 001 Dark ash silver When replacing the hinge cover make sure the hinges rotate downward as far as they can go Align the cover and then start from above and rotate the cover downward onto the hinges Make sure the clips snap into place along the bottom of the display cover 54 Chapter 6 Removal and replacem...

Page 65: ... 3 and then the bottom 4 of the bezel until it disengages from the display enclosure b Remove the bezel 5 The display bezel is available using spare part number L20421 001 3 If it is necessary to replace the camera microphone module a Detach the module 1 from the display back cover The module is attached with double sided adhesive Component replacement procedures 55 ...

Page 66: ...g spare part number L20446 001 4 If it is necessary to replace the display panel IMPORTANT HD panels are secured to the display enclosure with screws FHD panels are secured with tape a HD panels Remove the four Phillips M2 0 3 0 screws that secure the panel to the display enclosure 56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 67: ...01 c HD and FHD panels Swing the top edge of the display panel forward and position it upside down next to the display enclosure 1 d Release the adhesive support strip 2 that secures the display panel cable connector to the display panel e Disconnect the display panel cable 3 from the display panel f Remove the display panel Raw display panels are available using the following spare part numbers L...

Page 68: ...y hinges 2 The display hinges are available using spare part number L20420 001 6 If it is necessary to replace the display panel cable a Release the cable from the retention clips and routing channel built into the bottom edge and side of the display enclosure 1 58 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts ...

Page 69: ...vers a Remove the antennas from the top of the display enclosure 1 b Release the wireless antenna cables from the retention clips and routing channel built into the sides of the display enclosure 2 Antennas are available using the following spare part numbers L20445 001 Single antenna models L23060 001 Single antenna narrow bezel models L20444 001 Dual antenna models L23059 001 Dual antenna narrow...

Page 70: ...reassemble and install the display assembly components When reassembling an FHD display assembly be sure the install the following parts into the display enclosure from the Display Miscellaneous Kit spare part number L23065 001 and display panel stretchable adhesive tape spare part number L29080 001 1 Four positioning corner pieces 2 Two gaskets 3 Display panel stretchable adhesive tape 60 Chapter...

Page 71: ...Component replacement procedures 61 ...

Page 72: ...see Optical drive on page 28 b Bottom cover see Bottom cover on page 31 c Battery see Battery on page 33 d Display see Display assembly on page 53 When replacing the system board be sure to remove the following components as applicable from the defective system board and install them on the replacement system board WLAN module see WLAN module on page 42 Memory modules see Memory on page 35 Heat si...

Page 73: ...lips M2 0 3 0 screws that secure the system board to the computer 1 3 Lift the left side of the system board and then remove the system board from the computer 2 Reverse this procedure to install the system board Component replacement procedures 63 ...

Page 74: ...cal drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 5 Remove the display see Display assembly on page 53 Remove the speakers 1 Remove the speaker cable from the clips built into the computer 1 2 Remove the speakers from the computer 2 Reverse this procedure to install the speakers 64 Chapter 6 Removal and replacem...

Page 75: ...ptical drive see Optical drive on page 28 3 Remove the bottom cover see Bottom cover on page 31 4 Remove the battery see Battery on page 33 5 Remove the system board see System board on page 62 6 Remove the display see Display assembly on page 53 Remove the power connector cable 1 Remove the cable from the clips built into the computer 1 2 Remove the power connector cable from the computer 2 Rever...

Page 76: ...y codes For use in country or region Spare part number For use in country or region Spare part number For use in country or region Spare part number Belgium A41 Hungary 211 Slovenia BA1 Bulgaria 261 India D61 South Korea AD1 Chile 161 Israel BB1 Spain 071 Czech Republic Slovakia FL1 Italy 061 Switzerland BG1 Denmark Finland and Norway DH1 Japan 291 Taiwan AB1 French Canada DB1 The Netherlands B31 ...

Page 77: ...ow key or the down arrow key on the keyboard To close open dialog boxes and return to the main Computer Setup screen press esc and then follow the on screen instructions To exit Computer Setup choose one of the following methods To exit Computer Setup menus without saving your changes select Main select Ignore Changes and Exit and then select Yes NOTE If you are using arrow keys to highlight your ...

Page 78: ... changes select Main select Ignore Changes and Exit and then select Yes NOTE If you are using arrow keys to highlight your choice you must then press enter To check for later BIOS versions see Downloading a BIOS update on page 68 Downloading a BIOS update CAUTION To reduce the risk of damage to the computer or an unsuccessful installation download and install a BIOS update only when the computer i...

Page 79: ... on screen instructions NOTE After a message on the screen reports a successful installation you can delete the downloaded file from your hard drive Changing the boot order using the f9 prompt To dynamically choose a boot device for the current startup sequence follow these steps 1 Access the Boot Device Options menu Turn on or restart the computer and when the HP logo appears press f9 to enter th...

Page 80: ...ores the BIOS to its previously safe state without user intervention HP Sure Start is configured and already enabled so that most users can use the HP Sure Start default configuration The default configuration can be customized by advanced users To access the latest documentation on HP Sure Start go to http www hp com support Select Find your product and then follow the on screen instructions 70 C...

Page 81: ... HP Support Assistant a Type support in the taskbar search box and then select the HP Support Assistant app or Select the question mark icon in the taskbar b Select Troubleshooting and fixes c Select Diagnostics and then select HP PC Hardware Diagnostics Windows 2 When the tool opens select the type of diagnostic test you want to run and then follow the on screen instructions NOTE If you need to s...

Page 82: ...der on your computer or the USB flash drive where the exe file was downloaded double click the exe file and then follow the on screen instructions Using HP PC Hardware Diagnostics UEFI NOTE For Windows 10 S computers you must use a Windows computer and a USB flash drive to download and create the HP UEFI support environment because only exe files are provided For more information see Downloading H...

Page 83: ...h drive can be useful in the following situations HP PC Hardware Diagnostics UEFI is not included in the preinstall image HP PC Hardware Diagnostics UEFI is not included in the HP Tool partition The hard drive is damaged NOTE The HP PC Hardware Diagnostics UEFI download instructions are provided in English only and you must use a Windows computer to download and create the HP UEFI support environm...

Page 84: ...y product name or number NOTE For some products it may be necessary to download the software by using the product name or number To download HP Remote PC Hardware Diagnostics UEFI by product name or number follow these steps 1 Go to http www hp com support 2 Select Get software and drivers select your type of product enter the product name or number in the search box that is displayed select your ...

Page 85: ... HP logo appears press f10 to enter Computer Setup 2 Select Advanced and then select Settings 3 Make your customization selections 4 Select Main and then Save Changes and Exit to save your settings Your changes take effect when the computer restarts Using Remote HP PC Hardware Diagnostics UEFI settings select products only 75 ...

Page 86: ... you start the recovery process IMPORTANT For a tablet with a detachable keyboard connect the tablet to the keyboard base before beginning any recovery process Backing up information and creating recovery media Using Windows tools IMPORTANT Windows is the only option that allows you to back up your personal information Schedule regular backups to avoid information loss You can use Windows tools to...

Page 87: ...n screen instructions To recover your system Insert the HP Recovery media and then restart the computer Changing the computer boot order If your computer does not restart using the HP Recovery media you can change the computer boot order This is the order of devices listed in BIOS where the computer looks for startup information You can change the selection to an optical drive or a USB flash drive...

Page 88: ...9 A6 A4 processors UMA graphics 2004 7 g 4 42 lbs HDD and ODD Ryzen A9 A6 A4 processors discrete graphics 2088 7 g 4 60 lbs Input power Operating voltage 19 0 V dc 4 74 A 90 W or 18 5 V dc 3 5 A 65 W or 45 W Operating current 4 74 A or 3 5 A Temperature Operating not writing to optical disc 0 C to 35 C 32 F to 95 F Operating writing to optical disc 5 C to 35 C 41 F to 95 F Nonoperating 20 C to 60 ...

Page 89: ...d state drive specifications 128 GB 256 GB Height 1 35 mm 1 35 mm Weight 10 g 10 g Form factor M 2 2280 D2 B M M 2 2280 D2 B M Transfer rate up to 540 MB sec up to 540 MB sec Interface type SATA 3 SATA 3 Ready time maximum to not busy 1 0 ms 1 0 ms Access times logical 0 1 ms 0 1 ms Total logical sectors 234 441 648 468 883 296 Operating temperature 0 C to 70 C 32 F to 158 F 1 GB 1 billion bytes w...

Page 90: ...l Write Random Write Up to 1260 MB s Up to 100 000 IOPs Ready time Maximum to not busy 1 0 s Access times Logical 0 1 ms Total logical sectors 500 118 192 Operating temperature Operating Non operating 0 to 70 C 32 F to 158 F 40 to 80 C 40 F to 176 F 1 GB 1 billion bytes when referring to hard drive storage capacity Actual accessible capacity is less NOTE Certain restrictions and exclusions apply C...

Page 91: ...A security ATA security ATA security Seek times typical read including setting Single track 2 0 ms 2 0 ms 3 ms Average read write 12 ms 12 ms 13 ms Maximum 22 ms 22 ms 24 ms Logical blocks 3 907 029 168 1 953 525 168 1 048 576 000 Disk rotational speed 5400 rpm 5400 rpm 5400 rpm Operating temperature 0 C to 60 C 32 F to 140 F 1 GB 1 billion bytes when referring to hard drive storage capacity Actua...

Page 92: ...rements are applicable to all countries and regions The length of the power cord set must be at least 1 0 m 3 3 ft and no more than 2 0 m 6 5 ft All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in the country or region where the power cord set will be used The power cord sets must have a minimum current capacity of 10 A and a nominal voltage rating...

Page 93: ... The Netherlands KEMA 1 New Zealand SANZ 1 Norway NEMKO 1 The People s Republic of China CCC 4 Saudi Arabia SASO 7 Singapore PSB 1 South Africa SABS 1 South Korea KTL 5 Sweden SEMKO 1 Switzerland SEV 1 Taiwan BSMI 6 Thailand TISI 1 The United Kingdom ASTA 1 The United States UL 2 1 The flexible cord must be Type HO5VV F 3 conductor 0 75 mm conductor size Power cord set fittings appliance coupler a...

Page 94: ...8303 7 A 125 V ac configuration 4 The flexible cord must be Type RVV 3 conductor 0 75 mm conductor size Power cord set fittings appliance coupler and wall plug must bear the CCC certification mark 5 The flexible cord must be Type H05VV F 3 conductor 0 75 mm conductor size KTL logo and individual approval number must be on each element Corset approval number and logo must be printed on a flag label...

Page 95: ... keyboard base before beginning steps in this chapter Current BIOS steps 1 Follow steps a through l below to restore the nonvolatile memory that can contain personal data Restoring or reprogramming nonvolatile memory that does not store personal data is neither necessary nor recommended a Turn on or restart the computer and then press esc while the Press the ESC key for Startup Menu message is dis...

Page 96: ...or fingerprint sensor one or two prompts will appear one to clear the TPM and the other to Reset Fingerprint Sensor press or tap F1 to accept or F2 to reject l Remove all power and system batteries for at least 24 hours 2 Complete one of the following Remove and retain the storage drive or Clear the drive contents by using a third party utility designed to erase data from an SSD or Clear the conte...

Page 97: ...write protected Controller NIC EEPROM 64 KBytes not customer accessible No Yes Stores NIC configuration and NIC firmware NIC EEPROM is programmed using a utility from the NIC vendor that can be run from DOS A utility is required to write data to this memory and is available from the NIC vendor Writing data to this ROM in an inappropriate manner will render the NIC non functional DIMM Serial Presen...

Page 98: ...ly signed by Intel can be applied using this utility Bluetooth flash select products only 2 Mbit No Yes Stores Bluetooth configuration and firmware Bluetooth flash is programmed at the factory Tools for writing data to this memory are not publicly available but can be obtained from the silicon vendor A utility is required for writing data to this memory and is made available through newer versions...

Page 99: ...ic system diagnostics The UEFI BIOS provides functionality beyond that of the legacy BIOS In addition the UEFI BIOS works to initialize the computer s hardware before loading and executing the OS the run time environment allows the loading and execution of software programs from storage devices to provide more functionality such as advanced hardware diagnostics with the ability to display more det...

Page 100: ...ot Keys a Turn on or restart the computer and then press esc while the Press the ESC key for Startup Menu message is displayed at the bottom of the screen b Select the Security menu select Secure Boot Configuration and then follow the on screen instructions c At the Secure Boot Configuration window select Secure Boot select Clear Secure Boot Keys and then follow the on screen instructions to conti...

Page 101: ...he battery in general household waste Follow the local laws and regulations in your area for battery disposal HP encourages customers to recycle used electronic hardware HP original print cartridges and rechargeable batteries For more information about recycling programs see the HP Web site at http www hp com recycle 91 ...

Page 102: ...rs 56 caps lock light identifying 9 cautions electrostatic discharge 23 chipset product description 1 components bottom 13 display 7 keyboard area 8 left side 6 right side 5 computer major components 15 Computer Setup navigating and selecting 67 restoring factory settings 67 starting 67 computer setup 67 computer specifications 78 connector power 6 D Display assembly spare part numbers 16 display ...

Page 103: ...ry 14 serial number 14 service 14 wireless certification 14 WLAN 14 left side components 6 lights AC adapter and battery 6 camera 7 caps lock 9 drive 5 mute 9 power 5 RJ 45 network status 6 M M 2 solid state drive specifications 80 memory nonvolatile 85 product description 1 removal 35 spare part number 16 spare part numbers 35 volatile 85 MicroSD memory card reader identifying 5 model name 1 mute...

Page 104: ...rive bracket and connector board removal 40 spare part numbers 40 solid state drive cable spare part number 21 solid state drive connector board spare part number 16 speaker volume action keys 12 speakers identifying 10 removal 64 spare part number 16 spare part numbers 64 special keys using 11 specifications computer 78 display 79 hard drive 81 M 2 solid state drive 80 solid state drive 79 static...

Page 105: ...WLAN antenna removal 59 WLAN antennas identifying 7 WLAN cable spare part number 20 WLAN device 14 WLAN label 14 WLAN module spare part number 16 workstation guidelines 23 Index 95 ...

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HP 255 G7, Maintenance And Service Manual

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Summary of Contents for 255 G7

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