Dell Inspiron 7786 Service Manual Download

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Removing the display assembly

WARNING:

Before working inside your computer, read the safety information that shipped with your computer and follow the

steps in

Before working inside your computer

. After working inside your computer, follow the instructions in

After working inside

your computer

. For more safety best practices, see the Regulatory Compliance home page at

www.dell.com/

regulatory_compliance

Prerequisites

Remove the

Remove the

Remove the

Remove the

Procedure

Turn the computer over and open the display as far as possible.

CAUTION:

Place the computer on a soft and clean surface to avoid scratching the display.

Peel the tape that secures the touch-screen cable to the system board.

Open the latch and disconnect the touch-screen board cable from the system board.

Peel the tape that secures the display cable to the system board.

Open the latch and disconnect the display cable from the system board.

Remove the display cable and touch-screen board cable from the routing guides on the palm-rest assembly.

Remove the antenna cables from the routing guides on the palm-rest assembly.

Remove the four screws (M2.5x5) that secure the display hinges to the I/O board and system board.

Lift the display assembly off the palm-rest assembly.

Removing the display assembly

Summary of Contents for Inspiron 7786

Page 1: ...Inspiron 7786 Service Manual Regulatory Model P36E Regulatory Type P36E001 ...

Page 2: ...amage to hardware or loss of data and tells you how to avoid the problem WARNING A WARNING indicates a potential for property damage personal injury or death 2018 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2018 08 Rev A00 ...

Page 3: ...Lifting equipment 12 4 Recommended tools 13 5 Screw list 14 6 Removing the base cover 15 Procedure 15 7 Replacing the base cover 17 Procedure 17 8 Removing the battery 19 Prerequisites 19 Procedure 19 9 Replacing the battery 21 Procedure 21 Post requisites 22 10 Removing the memory modules 23 Prerequisites 23 Procedure 23 11 Replacing the memory modules 24 Procedure 24 Post requisites 24 12 Removi...

Page 4: ...tes 31 Procedure 31 19 Replacing the hard drive 33 Procedure 33 Post requisites 34 20 Removing the solid state drive Intel Optane memory module 35 Prerequisites 35 Procedure 35 21 Replacing the solid state drive Intel Optane memory module 37 Procedure 37 Post requisites 38 Procedure to move the screw mount 38 22 Removing the speakers 40 Prerequisites 40 Procedure 40 23 Replacing the speakers 41 Pr...

Page 5: ...s 48 30 Removing the I O board 49 Prerequisites 49 Procedure 49 31 Replacing the I O board 50 Procedure 50 Post requisites 50 32 Removing the power button with fingerprint reader 51 Prerequisites 51 Procedure 51 33 Replacing the power button with fingerprint reader 52 Procedure 52 Post requisites 52 34 Removing the system board 53 Prerequisites 53 Procedure 53 35 Replacing the system board 55 Proc...

Page 6: ...rest 65 Procedure 65 Post requisites 65 42 Removing the display panel 66 Prerequisites 66 Procedure 66 43 Replacing the display panel 68 Procedure 68 Post requisites 68 44 Removing the camera 69 Prerequisites 69 Procedure 69 45 Replacing the camera 70 Procedure 70 Post requisites 70 46 Removing the display hinges 71 Prerequisites 71 Procedure 71 47 Replacing the display hinges 72 Procedure 72 Post...

Page 7: ...on Engine Interface 77 Intel Virtual Button driver 77 Wireless and Bluetooth drivers 77 53 System setup 78 Boot Sequence 78 Navigation keys 78 BIOS overview 78 Entering BIOS setup program 79 System setup options 79 Clearing CMOS settings 84 Clearing BIOS System Setup and System passwords 84 54 Troubleshooting 85 Flashing the BIOS 85 Flashing BIOS USB key 85 Enhanced Pre Boot System Assessment ePSA...

Page 8: ... Start Power Shut down NOTE If you are using a different operating system see the documentation of your operating system for shut down instructions 3 Disconnect your computer and all attached devices from their electrical outlets 4 Disconnect all attached network devices and peripherals such as keyboard mouse and monitor from your computer 5 Remove any media card and optical disc from your compute...

Page 9: ...y screws remain inside your computer 2 Connect any external devices peripherals or cables you removed before working on your computer 3 Replace any media cards discs or any other parts that you removed before working on your computer 4 Connect your computer and all attached devices to their electrical outlets 5 Turn on your computer 2 After working inside your computer 9 ...

Page 10: ... concern when you handle electronic components especially sensitive components such as expansion cards processors memory DIMMs and system boards Very slight charges can damage circuits in ways that may not be obvious such as intermittent problems or a shortened product life span As the industry pushes for lower power requirements and increased density ESD protection is an increasing concern Due to...

Page 11: ...egional office to find out if they have one To perform the test plug the wrist strap s bonding wire into the tester while it is strapped to your wrist and push the button to test A green LED is lit if the test is successful a red LED is lit and an alarm sounds if the test fails Insulator Elements It is critical to keep ESD sensitive devices such as plastic heat sink casings away from internal part...

Page 12: ... mechanical lifting device 1 Get a firm balanced footing Keep your feet apart for a stable base and point your toes out 2 Tighten stomach muscles Abdominal muscles support your spine when you lift offsetting the force of the load 3 Lift with your legs not your back 4 Keep the load close The closer it is to your spine the less force it exerts on your back 5 Keep your back upright whether lifting or...

Page 13: ...Recommended tools The procedures in this document may require the following tools Philips screwdriver 1 Flat head screwdriver Plastic scribe 4 Recommended tools 13 ...

Page 14: ... assembly M2x2 3 Touchpad Palm rest assembly M2x2 4 Fan Palm rest assembly M2x3 3 Display hinges Palm rest assembly M2 5x5 4 Power adapter port Palm rest assembly M2x3 1 I O board Palm rest assembly M2x3 1 Power button with fingerprint reader Palm rest assembly M3x3 1 System board Palm rest assembly M2x2 1 Keyboard bracket Keyboard M1 4x2 32 Keyboard Palm rest assembly M1 2x1 5 5 Hinge brackets Di...

Page 15: ...home page at www dell com regulatory_compliance Procedure 1 Remove the eight screws M2x5 that secure the base cover to the palm rest assembly 2 Loosen the three captive screws that secure the base cover to the palm rest assembly 3 Using a plastic scribe pry the base cover from the tabs on the hinges and continue to pry the base cover from the slots on the palm rest assembly CAUTION Do not pry the ...

Page 16: ...NOTE The following step is applicable only if you want to further remove any other component from your computer 5 Disconnect the battery cable from the system board 16 Removing the base cover ...

Page 17: ...e your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Connect the battery cable to the system board 2 Align the tabs on the base cover with the slots on the palm rest assembly 3 Carefully snap the base cover onto the palm rest assembly 7 Replacing the bas...

Page 18: ...4 Tighten the three captive screws that secure the base cover to the palm rest assembly 5 Replace the eight screws M2x5 that secure the base cover to the palm rest assembly 18 Replacing the base cover ...

Page 19: ...ter For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites Remove the base cover Procedure 1 Disconnect the battery cable from the system board applicable only if not disconnected earlier 2 Peel the tape that secures the battery cable to the palm rest assembly 3 Remove the four screws M2x3 that secure the battery to the palm rest ...

Page 20: ...5 Turn the computer over open the display then press and hold the power button for five seconds to ground the system board 20 Removing the battery ...

Page 21: ...er working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Using the alignment posts place the battery on the palm rest assembly 2 Replace the four screws M2x3 that secure the battery to the palm rest assembly 3 Adhere the tape that secures the battery cable to the palm rest assembly 4 Connect the battery...

Page 22: ...Post requisites Replace the base cover 22 Replacing the battery ...

Page 23: ...orking inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites Remove the base cover Procedure 1 Lift the Mylar to access the memory module 2 Use your fingertips to carefully spread apart the securing clips on each end of the memory module slot until the memory module pops up 3 Slide and remove the memory modul...

Page 24: ...tices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Lift the Mylar to access the memory module slot 2 Align the notch on the memory module with the tab on the memory module slot 3 Slide the memory module firmly into the slot at an angle onto the memory module slot 4 Press the memory module down until it clicks into place NOTE If you do not hear the click...

Page 25: ...re safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance CAUTION Removing the coin cell battery resets the BIOS setup program s settings to default It is recommended that you note the BIOS setup program s settings before removing the coin cell battery Prerequisites Remove the base cover Procedure 1 Disconnect the coin cell battery cable from the system...

Page 26: ... working inside your computer follow the instructions in After working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Adhere the coin cell battery to the palm rest assembly 2 Connect the coin cell battery cable to the system board Post requisites Replace the base cover 13 26 Replacing the coin cell batte...

Page 27: ... in After working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites Remove the base cover Procedure 1 Remove the I O cable from the routing guides on the fan 2 Disconnect the fan cable from the system board 3 Remove the two screws M2x3 that secure the fan to the palm rest assembly 4 Lift the fan off the p...

Page 28: ...king inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Using the alignment posts place the fan on the palm rest assembly 2 Replace the two screws M2x3 that secure the fan to the palm rest assembly 3 Connect the fan cable to the system board 4 Route the I O cable through the routing guides on the fan Post re...

Page 29: ...ompliance WARNING The heat sink may become hot during normal operation Allow sufficient time for the heat sink to cool before you touch it CAUTION For maximum cooling of the processor do not touch the heat transfer areas on the heat sink The oils in your skin can reduce the heat transfer capability of the thermal grease Prerequisites 1 Remove the base cover 2 Remove the fan Procedure 1 In reverse ...

Page 30: ...m regulatory_compliance CAUTION Incorrect alignment of the heat sink can damage the system board and processor NOTE If either the system board or the heat sink is replaced use the thermal pad provided in the kit to ensure that thermal conductivity is achieved Procedure 1 Align the screw holes on the heat sink with the screw holes on the system board 2 In sequential order as indicated on the heat s...

Page 31: ...ompliance CAUTION Hard drives are fragile Exercise care when handling the hard drive CAUTION To avoid data loss do not remove the hard drive while the computer is in sleep or on state Prerequisites 1 Remove the base cover 2 Remove the battery Procedure 1 Open the latch and disconnect the hard drive cable from the system board 2 Remove the three screws M2x3 that secure the hard drive assembly to th...

Page 32: ...5 Remove the four screws M3x3 that secure the hard drive bracket to the hard drive 6 Lift the hard drive off the hard drive bracket 32 Removing the hard drive ...

Page 33: ...e fragile Exercise care when handling the hard drive Procedure 1 Place the hard drive into the hard drive bracket 2 Align the screw holes on the hard drive bracket with the screw holes on the hard drive and then replace the four screws M3x3 that secure the hard drive bracket to the hard drive 3 Connect the interposer to the hard drive assembly 4 Align the screw holes on the hard drive assembly wit...

Page 34: ...Post requisites 1 Replace the battery 2 Replace the base cover 34 Replacing the hard drive ...

Page 35: ...nside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites You need to disable the Intel Optane memory before removing Intel Optane memory module from your computer For more information about disabling the Intel Optane memory see Disabling Intel Optane memory Remove the base cover Procedure 1 Locate the solid state...

Page 36: ...36 Removing the solid state drive Intel Optane memory module ...

Page 37: ...age at www dell com regulatory_compliance CAUTION Solid state drives are fragile Exercise care when handling the solid state drive Procedure NOTE Follow the procedure to change the location of the screw mount in case if you are replacing the solid state drive of a different form factor 1 Align the notch on the solid state drive Intel Optane memory module with the tab on the solid state drive slot ...

Page 38: ...on of the screw mount 1 Remove the screw mount from the palm rest and keyboard assembly 2 Turn the screw mount to 180 degrees 3 Insert the screw mount into the other screw mount slot on the palm rest and keyboard assembly 4 Align the notch on the solid state drive Intel Optane memory module with the tab on the solid state drive slot 5 Slide the solid state drive Intel Optane memory module firmly i...

Page 39: ...Replacing the solid state drive Intel Optane memory module 39 ...

Page 40: ...in After working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites Remove the base cover Procedure 1 Disconnect the speaker cable from the system board 2 Remove the speaker cable from the routing guides on the palm rest assembly 3 Remove the speakers from the alignment posts and lift the speakers off the ...

Page 41: ...n After working inside your computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Using the alignment posts on the palm rest assembly place the speakers on the palm rest assembly 2 Route the speaker cable through the routing guides on the palm rest assembly 3 Connect the speaker cable to the system board Post requisites Re...

Page 42: ... best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites Remove the base cover Procedure 1 Locate the wireless card on the system board 2 Remove the screw M2x3 that secures the wireless card bracket to the wireless card and palm rest assembly 3 Remove the wireless card bracket from the wireless card 4 Disconnect the antenna cables from the wireles...

Page 43: ...Removing the wireless card 43 ...

Page 44: ...to the wireless card The following table provides the antenna cable color scheme for the wireless card supported by your computer Table 2 Antenna cable color scheme Connectors on the wireless card Antenna cable color Main white triangle White Auxiliary black triangle Black 2 Align the notch on the wireless card with the tab on the wireless card slot and insert the wireless card at an angle into th...

Page 45: ...ar as possible CAUTION Place the computer on a soft and clean surface to avoid scratching the display 2 Peel the tape that secures the touch screen cable to the system board 3 Open the latch and disconnect the touch screen board cable from the system board 4 Peel the tape that secures the display cable to the system board 5 Open the latch and disconnect the display cable from the system board 6 Re...

Page 46: ...es with the screw holes on the palm rest assembly 2 Replace the four screws M2 5x5 that secure the display hinges to the I O board and system board 3 Route the antenna cables through the routing guides on the palm rest assembly 4 Route the display cable and touch screen cable on the routing guides on the palm rest assembly 5 Connect the display cable to the system board and close the latch to secu...

Page 47: ...ety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly Procedure 1 Disconnect the power adapter port cable from the system board 2 Remove the screw M2x3 that secures the power adapter port to the palm rest assembly 3 Lift t...

Page 48: ...e home page at www dell com regulatory_compliance Procedure 1 Place the power adapter port into the slot on the palm rest assembly 2 Align the screw hole on the power adapter port with the screw hole on the palm rest assembly and replace the screw M2x3 that secures the power adapter port to the palm rest assembly 3 Connect the power adapter port cable to the system board Post requisites 1 Replace ...

Page 49: ...he Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly Procedure 1 Open the latch and disconnect the fingerprint reader cable from the I O board 2 Using the pull tab disconnect the I O board cable from the I O board 3 Remove the screw M2x3 that se...

Page 50: ...n the USB ports on the I O board with the slots on the palm rest assembly 2 Align the screw hole on the I O board with the screw hole on the palm rest assembly and replace the screw M2x3 that secures the I O board to the palm rest assembly 3 Connect the I O board cable to the I O board and close the latch to secure the cable 4 Slide the fingerprint reader cable into the connector on the I O board ...

Page 51: ...ry_compliance NOTE Applicable only for computers that are shipped with fingerprint reader Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly 6 Remove the I O board Procedure 1 Peel the fingerprint reader cable off the palm rest assembly 2 Open the latch and disconnect the fingerprint reader cable from the power but...

Page 52: ...ly for computers that are shipped with fingerprint reader Procedure 1 Align the screw hole on the power button board with the screw hole on the palm rest assembly 2 Replace the screw M3x3 that secures the power button board to the palm rest assembly 3 Connect the fingerprint reader cable to the power button board and close the latch to secure the cable 4 Adhere the fingerprint reader cable to the ...

Page 53: ... cables from the system board note the location of the connectors so that you can reconnect the cables correctly after you replace the system board Prerequisites 1 Remove the base cover 2 Remove the memory modules 3 Remove the solid state drive Intel Optane memory module 4 Remove the wireless card 5 Remove the fan 6 Remove the heat sink 7 Remove the display assembly Procedure 1 Disconnect the powe...

Page 54: ...9 Remove the two screws M2x2 that secure the system board to the palm rest assembly 10 Slide and lift the system board off the palm rest assembly 54 Removing the system board ...

Page 55: ...ou replace the system board Procedure 1 Slide the I O ports on the system board into the slots on the palm rest assembly 2 Align the screw holes on the system board with the screw holes on the palm rest assembly and then replace the two screws M2x2 that secure the system board to the palm rest assembly 3 Connect the power adapter port cable to the system board 4 Connect the speaker cable to the sy...

Page 56: ...s 7 Replace the base cover Entering the Service Tag in the BIOS setup program 1 Turn on or restart your computer 2 Press F2 when the Dell logo is displayed to enter the BIOS setup program 3 Navigate to the Main tab and enter the Service Tag in the Service Tag Input field NOTE Service tag is the alphanumeric identifier located at the back side of your computer 56 Replacing the system board ...

Page 57: ... dell com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the battery Procedure 1 Remove the three screws M2x2 that secure the touch pad bracket to the palm rest assembly 2 Lift the touch pad bracket off the palm rest assembly 3 Open the latch and disconnect the touch pad cable from touch pad assembly 4 Peel off the tapes that secure the touch pad assembly to the palm rest ass...

Page 58: ... holes on the touch pad with the screw holes on the palm rest assembly 2 Replace the four screws M2x2 that secure the touch pad to the palm rest assembly 3 Adhere the tapes that secure the touch pad assembly to the palm rest assembly 4 Slide the touch pad cable into the connector on the touch pad assembly and close the latches to secure the cable 5 Align the screw holes touch pad bracket with the ...

Page 59: ...ver 2 Remove the battery 3 Remove the solid state drive Intel Optane memory module 4 Remove the memory modules 5 Remove the hard drive 6 Remove the coin cell battery 7 Remove the wireless card 8 Remove the speakers 9 Remove the fan 10 Remove the heat sink 11 Remove the display assembly 12 Remove the power adapter port 13 Remove the I O board 14 Remove the power button with fingerprint reader 15 Re...

Page 60: ...3 Lift the keyboard bracket off the keyboard 4 Remove the five screws M1 2x1 5 that secures the keyboard to the palm rest assembly 5 Lift the keyboard off the palm rest assembly 60 Removing the keyboard ...

Page 61: ...er For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Align the screw holes on the keyboard with the screw holes on the palm rest assembly 2 Replace the five screws M1 2x1 5 that secure the keyboard to palm rest assembly 3 Align the screws holes on the keyboard bracket with the screw holes on the keyboard 4 Replace the 32 screws...

Page 62: ... the I O board 5 Replace the power adapter port 6 Replace the display assembly 7 Replace the heat sink 8 Replace the fan 9 Replace the speakers 10 Replace the wireless card 11 Replace the coin cell battery 12 Replace the hard drive 13 Replace the memory modules 14 Replace the solid state drive Intel Optane memory module 15 Replace the battery 16 Replace the base cover 62 Replacing the keyboard ...

Page 63: ...tes 1 Remove the base cover 2 Remove the battery 3 Remove the memory modules 4 Remove the coin cell battery 5 Remove the fan 6 Remove the heat sink 7 Remove the hard drive 8 Remove the solid state drive Intel Optane memory module 9 Remove the speakers 10 Remove the wireless card 11 Remove the display assembly 12 Remove the power adapter port 13 Remove the I O board 14 Remove the power button with ...

Page 64: ...64 Removing the palm rest ...

Page 65: ...rocedure Place the palm rest on a flat surface Post requisites 1 Replace the keyboard 2 Replace the touchpad 3 Replace the system board 4 Replace the power button with fingerprint reader 5 Replace the I O board 6 Replace the power adapter port 7 Replace the display assembly 8 Replace the wireless card 9 Replace the speakers 10 Replace the solid state drive Intel Optane memory module 11 Replace the...

Page 66: ... Depot CIS CAR MIS service incidents The complete display assembly LCD Hinge Up Display Assembly must be dispatched for onsite service incidents 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly Procedure 1 Remove the display cable from the routing guide inside the hinge cover 2 Using a plastic scribe release the tabs that secu...

Page 67: ...After performing the above steps we are left with the display panel Removing the display panel 67 ...

Page 68: ...regulatory_compliance Procedure 1 Place the display panel on a flat surface 2 Replace the display cable 3 Replace the camera 4 Turn the display panel assembly over 5 Route the display cable through the routing guide inside the hinge cover 6 Align the tabs on the display panel assembly with the slots on the display back cover and antenna assembly and gently snap the display panel assembly into plac...

Page 69: ...ty best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly 6 Remove the display panel Procedure 1 Using a plastic scribe gently peel the camera off the display back cover and antenna assembly 2 Peel the tape that secures the cam...

Page 70: ... safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure 1 Connect the camera cable to the camera module 2 Adhere the tape that secures the camera cable to the camera 3 Using the alignment post adhere the camera to the display panel assembly Post requisites 1 Replace the display panel 2 Replace the display assembly 3 Replace the heat sink 4 Rep...

Page 71: ...com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly 6 Remove the display panel Procedure 1 Remove the six screws M2 5x2 5 that secure the hinges to the display back cover and antenna assembly 2 Remove the two screws M2x3 that secure the hinge brackets to the display back cover and antenna a...

Page 72: ...e Procedure 1 Align the screw holes on the hinges and brackets with the screw holes on the display back cover and antenna assembly 2 Route the antenna cables through the hinge covers 3 Replace the two screws M2x3 that secure the hinge brackets to the display back cover and antenna assembly 4 Replace the six screws M2 5x2 5 that secure the hinges to the display back cover and antenna assembly Post ...

Page 73: ...ireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly 6 Remove the display panel 7 Remove the camera Procedure 1 Peel the tape that secures the display cable to the display panel 2 Open the latch and disconnect the display cable from the display panel 3 Peel the tape that secures the sensor cable to the display panel 4 Open the latch and disconnect the sensor cable fro...

Page 74: ...panel 2 Connect the touch screen cable and close the latch to secure the cable 3 Adhere the tape that secures the touch screen cable to the display panel 4 Connect the sensor cable and close the latch to secure the cable 5 Adhere the tape that secures the sensor cable to the display panel 6 Connect the display cable and close the latch to secure the cable 7 Adhere the tape that secures the display...

Page 75: ...For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Prerequisites 1 Remove the base cover 2 Remove the wireless card 3 Remove the fan 4 Remove the heat sink 5 Remove the display assembly 6 Follow the procedure from step 1 to step 3 in Removing the display panel 7 Remove the display hinges Procedure After performing all the prerequisites we a...

Page 76: ...ur computer For more safety best practices see the Regulatory Compliance home page at www dell com regulatory_compliance Procedure Place the display back cover and antenna assembly on a flat surface Post requisites 1 Replace the display hinges 2 Follow the procedure from step 5 to step 6 in Replacing the display panel 3 Replace the display assembly 4 Replace the heat sink 5 Replace the fan 6 Repla...

Page 77: ...l com support Intel Trusted Execution Engine Interface In the Device Manager check if the Intel Trusted Execution Engine Interface driver is installed Install the driver update from www dell com support Intel Virtual Button driver In the Device Manager check if the Intel Virtual Button driver is installed Install the driver updates from www dell com support Wireless and Bluetooth drivers In the De...

Page 78: ...ics will display the ePSA diagnostics screen The boot sequence screen also displays the option to access the System Setup screen Navigation keys NOTE For most of the System Setup options changes that you make are recorded but do not take effect until you restart the system Keys Navigation Up arrow Moves to the previous field Down arrow Moves to the next field Enter Selects a value in the selected ...

Page 79: ...stalled devices the items listed in this section may or may not appear Table 3 System setup options System information menu General System Information System Information BIOS Version Displays the BIOS version number Service Tag Displays the Service Tag of the computer Asset Tag Displays the Asset Tag of the computer Ownership Tag Displays the ownership tag of the computer Manufacture Date Displays...

Page 80: ...s the audio controller information of the computer Wi Fi Device Displays the wireless device information of the computer Bluetooth Device Displays the bluetooth device information of the computer Battery Information Displays the battery health information Boot Sequence Boot Sequence Displays the boot sequence Boot List Option Displays the available boot options Advanced Boot Options Enable Legacy ...

Page 81: ...ange or delete the system password Internal HDD 0 Password Set change or delete the internal hard disk drive password Strong Password Enable or disable strong passwords Password Configuration Control the minimum and maximum number of characters allowed for Admin and System passwords Password Bypass Bypass the System Boot Password and the internal HDD password prompts during a system restart Passwo...

Page 82: ...ocessor load C States Control Enable or disable additional processor sleep states Default Enabled Intel TurboBoost Enable or disable Intel TurboBoost mode of the processor Default Enabled HyperThread control Enable or disable HyperThreading in the processor Default Enabled Power Management AC Behavior Enables the system to turn on automatically when AC power is supplied Enable Intel Speed Shift Te...

Page 83: ...M can utilize the additional hardware capabilities provided by Intel Virtualization Technology for Direct I O Table 10 System setup options Wireless menu Wireless Wireless Switch Determine which wireless devices can be controlled by the Wireless Switch Wireless Device Enable Enable or disable internal wireless devices Table 11 System setup options Maintenance menu Maintenance Service Tag Display t...

Page 84: ...MOS settings will reset the BIOS settings on your computer 1 Remove the base cover 2 Disconnect the battery cable from the system board 3 Remove the coin cell battery 4 Wait for one minute 5 Replace the coin cell battery 6 Connect the battery cable to the system board 7 Replace the base cover Clearing BIOS System Setup and System passwords To clear the system or BIOS passwords contact Dell technic...

Page 85: ...the BIOS setup program file to the bootable USB drive 4 Connect the bootable USB drive to the computer that needs the BIOS update 5 Restart the computer and press F12 when the Dell logo is displayed on the screen 6 Boot to the USB drive from the One Time Boot Menu 7 Type the BIOS setup program filename and press Enter 8 The BIOS Update Utility appears Follow the instructions on the screen to compl...

Page 86: ...ight between power and battery status light and hard drive activity light Hard drive activity light Turns on when the computer reads from or writes to the hard drive NOTE Hard drive activity light is supported only on computers shipped with hard drive Power and battery status light Indicates the power and battery charge status Solid white Power adapter is connected and the battery has more than 5 ...

Page 87: ...nology The Intel Rapid Storage Technology window is displayed 3 On the Status tab click Enable to enable the Intel Optane memory 4 On the warning screen select a compatible fast drive and then click Yes to continue enabling Intel Optane memory 5 Click Intel Optane memory Reboot to complete enabling your Intel Optane memory NOTE Applications may take up to three subsequent launches after enablement...

Page 88: ...ce Providers provide a modem router combo device 1 Turn off your computer 2 Turn off the modem 3 Turn off the wireless router 4 Wait for 30 seconds 5 Turn on the wireless router 6 Turn on the modem 7 Turn on your computer Flea power release Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been removed The following pr...

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Dell Inspiron 7786, Service Manual

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