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Notices 

ASUS Recycling/Takeback Services

ASUS recycling and takeback programs come from our commitment to the highest standards for 
protecting our environment. We believe in providing solutions for you to be able to responsibly 
recycle our products, batteries, other components, as well as the packaging materials. Please go to 
http://csr.asus.com/english/Takeback.htm for the detailed recycling information in different regions.

REACH

Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) 
regulatory framework, we published the chemical substances in our products at ASUS REACH 
website at http://csr.asus.com/english/REACH.htm

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two 
conditions:

• 

This device may not cause harmful interference; and

• 

This device must accept any interference received including interference that may cause 

undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital device, 
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This equipment generates, uses and can 
radiate radio frequency energy and, if not installed and used in accordance with manufacturer’s 
instructions, may cause harmful interference to radio communications. However, there is no 
guarantee that interference will not occur in a particular installation. If this equipment does cause 
harmful interference to radio or television reception, which can be determined by turning the 
equipment off and on, the user is encouraged to try to correct the interference by one or more of 
the following measures:

• 

Reorient or relocate the receiving antenna.

• 

Increase the separation between the equipment and receiver.

• 

Connect the equipment to an outlet on a circuit different from that to which the receiver is 

connected.

• 

Consult the dealer or an experienced radio/TV technician for help.

The use of shielded cables for connection of the monitor to the graphics card is required to 
assure compliance with FCC regulations. Changes or modifications to this unit not expressly 
approved by the party responsible for compliance could void the user’s authority to operate this 
equipment.

Lithium Battery Warning

CAUTION: 

Danger of explosion if battery is incorrectly replaced. Replace only with the same 

or equivalent type recommended by the manufacturer. Dispose of used batteries according 
to the manufacturer’s instructions.

Summary of Contents for G21CN

Page 1: ...Desktop PC G21CN User Guide ...

Page 2: ...ICULAR PURPOSE IN NO EVENT SHALL ASUS ITS DIRECTORS OFFICERS EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING DAMAGES FOR LOSS OF PROFITS LOSS OF BUSINESS LOSS OF USE OR DATA INTERRUPTION OF BUSINESS AND THE LIKE EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT SPECIFICATI...

Page 3: ...a USB storage device 18 Connecting microphone and speakers 19 Connecting multiple external displays 22 Chapter 3 Using your computer Proper posture when using your Desktop PC 23 Using the optical drive 24 Chapter 4 Connecting to the Internet Wired connection 25 Wi Fi connection on selected models only 29 Chapter 5 Troubleshooting Troubleshooting 31 Appendix Windows 10 User Manual Starting for the ...

Page 4: ...interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with manufacturer s instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or te...

Page 5: ...canaux CAN ICES 3 B NMB 3 B IC Canadian Compliance Statement Complies with the Canadian ICES 003 Class B specifications This device complies with RSS 210 of Industry Canada This Class B device meets all the requirements of the Canadian interference causing equipment regulations This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditi...

Page 6: ...Management Rules 2016 and prohibits use of lead mercury hexavalent chromium polybrominated biphenyls PBBs and polybrominated diphenyl ethers PBDEs in concentrations exceeding 0 1 by weight in homogenous materials and 0 01 by weight in homogenous materials for cadmium except for the exemptions listed in Schedule II of the Rule Canadian Department of Communications Statement This digital apparatus d...

Page 7: ...er category 2 Exposure to Radio Frequency Energy The radiated output power of the Wi Fi technology is below the FCC radio frequency exposure limits Nevertheless it is advised to use the wireless equipment in such a manner that the potential for human contact during normal operation is minimized FCC BluetoothWireless Compliance The antenna used with this transmitter must not be colocated or operate...

Page 8: ... attempt to disassemble or repair the optical drive by yourself For your safety contact a professional technician for assistance Service warning label WARNING INVISIBLE LASER RADIATION WHEN OPEN DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS CDRH Regulations The Center for Devices and Radiological Health CDRH of the U S Food and Drug Administration implemented regulations for las...

Page 9: ...n environments with ambient temperatures between 0 C 32 F and 35 C 95 F DO NOT cover the vents on the Desktop PC to prevent the system from getting overheated DO NOT use damaged power cords accessories or other peripherals To prevent electrical shock hazard disconnect the power cable from the electrical outlet before relocating the system Seek professional assistance before using an adapter or ext...

Page 10: ...tion on ASUS hardware and software products Refer to the ASUS website www asus com ASUS LocalTechnical Support Visit ASUS website at http support asus com contact for the contact information of local Technical Support Engineer DANGER WARNING Information to prevent injury to yourself when trying to complete a task CAUTION Information to prevent damage to the components when trying to complete a tas...

Page 11: ... retailer The illustrated items above are for reference only Actual product specifications may vary with different models Desktop PC G21CN Keyboard x1 Mouse x1 Power cord x1 2nd Power cord x1 Power adapter x1 2nd adapter x1 Warranty Card x1 Installation Guide Installation Guide x1 ...

Page 12: ...tilities All these values are encapsulated in a stunningly futuristic and stylish system casing Read the ASUS Warranty Card before setting up your ASUS Desktop PC Getting to know your computer Illustrations are for reference only The ports their locations and the chassis color vary with different models ENGLISH ASUS G21CN 12 Chapter 1 Getting started ...

Page 13: ...able via the lighting control in ASUS Command this LED lighting effect shows through the pattern USB 3 1 Gen 2 ports These ports connect to USB 3 1 Gen 2 devices such as a mouse printer scanner camera PDA and others USB 3 1 Gen 1 port Type C This port connects to USB Type C devices for data transfer at USB 3 1 Gen 1 speed USB 3 1 Gen 2 Gen 1 devices can only be used for data storage We strongly re...

Page 14: ... devices to USB 3 1 Gen 2 ports for faster and better performance for your USB 3 1 Gen 2 devices LAN RJ 45 port This port allows Gigabit connection to a Local Area Network LAN through a network hub Activity Link LED Speed LED Status Description Status Description OFF No link OFF 10Mbps connection ORANGE Linked ORANGE 100Mbps connection Orange Blinking Data activity GREEN 1Gbps connection Orange Bl...

Page 15: ...ating 19 5V 9 23A Microphone port pink This port connects to a microphone Line Out port lime This port connects to a headphone or speaker In a 4 1 5 1 or 7 1 channel configuration the function of this port becomes Front Speaker Out Supported by ASUS Audio Wizard Line In port light blue This port connects to a tape CD DVD player or other audio sources Port Headset 2 1 channel 4 1 channel 5 1 channe...

Page 16: ...nnecting an external monitor To connect an external monitor 1 Connect your monitor to the graphic output port of the discrete graphic card 2 Plug the monitor to a power source Connecting a USB keyboard and a USB mouse Connect a USB keyboard and a USB mouse to the USB ports on the rear panel of your computer Optical S PDIF out port This port allows you to connect your PC to amplified speakers headp...

Page 17: ...ower button Turning your computer ON This section describes how to turn on your computer after setting up your computer Turning your computer ON To turn your computer ON 1 Turn your monitor ON 2 Press the power button on your computer ASUS G21CN 17 ENGLISH ...

Page 18: ...1 Gen 2 ports on the front and rear panels The USB ports allow you to connect USB devices such as storage devices To connect a USB storage device Insert the USB storage device to your computer Front panel Rear panel ENGLISH ASUS G21CN 18 Chapter 2 Connecting devices to your computer ...

Page 19: ...top PC comes with microphone ports and speaker ports on both the front and rear panels The audio I O ports located on the rear panel allow you to connect 2 1 channel 4 1 channel 5 1 channel and 7 1 channel stereo speakers Connecting 2 1 channel Speakers ASUS G21CN 19 ENGLISH ...

Page 20: ...Connecting 4 1 channel Speakers Connecting 5 1 channel Speakers 20 Chapter 2 Connecting devices to your computer ENGLISH ...

Page 21: ...Connecting 7 1 channel Speakers LINE OUT ASUS G21CN 21 ENGLISH ...

Page 22: ...o enlarge your Windows desktop To set up multiple displays 1 Turn off your computer 2 Connect the two monitors to your computer and connect the power cords to the monitors Refer to Setting up your computer section in Chapter 1 for details on how to connect a monitor to your computer 3 Turn on your computer 4 From the Start menu click Settings System Display 5 Configure the settings for your displa...

Page 23: ...ir to make sure that your knees are slightly higher than your hips to relax the backs of your thighs If necessary use a footrest to raise the level of your knees Adjust the back of your chair so that the base of your spine is firmly supported and angled slightly backward Sit upright with your knees elbows and hips at an approximately 90º angle when you are at the PC Place the monitor directly in f...

Page 24: ... program from the AutoPlay window to access your files If AutoPlay is NOT enabled in your computer to access the data on an optical disc From the Start menu click File Explorer and then double click the CD DVD drive icon Removing an optical disc To remove an optical disc 1 While the system is on do either of the following to eject the tray Press the eject button below the drive bay cover From the ...

Page 25: ... the LAN RJ 45 port on the rear panel of your computer and the other end to a DSL cable modem Modem RJ 45 cable 3 Turn on the DSL cable modem and your computer 4 Configure the necessary Internet connection settings Contact your network administrator for details or assistance in setting up your Internet connection For more details refer to the sections Configuring a dynamic IP PPPoE network connect...

Page 26: ...her end to your LAN 2 Turn on your computer 3 Configure the necessary Internet connection settings Contact your network administrator for details or assistance in setting up your Internet connection For more details refer to the sections Configuring a dynamic IP PPPoE network connection or Configuring a static IP network connection 26 Chapter 4 Connecting to the Internet ENGLISH ...

Page 27: ...ng Center b From the Start menu click Settings Network Internet Ethernet Network and Sharing Center 2 From the Open Network and Sharing Center screen click Change Adapter settings 3 Right click on your LAN and select Properties 4 Click Internet ProtocolVersion 4 TCP IPv4 and click Properties 5 Click Obtain an IP address automatically and click OK Continue to the next steps if you are using PPPoE c...

Page 28: ...ctions to complete the setup Configuring a static IP network connection To configure a static IP network connection 1 Repeat steps 1 to 4 of the previous section 2 Click Use the following IP address 3 Enter the IP address Subnet mask and Gateway from your service provider 4 If needed enter the preferred DNS Server address and alternative address 5 When done click OK 28 Chapter 4 Connecting to the ...

Page 29: ... on selected models only Connect your computer to the Internet through a wireless connection To establish a wireless connection you need to connect to a wireless access point AP Modem Wireless AP ASUS G21CN 29 ENGLISH ...

Page 30: ...30 Chapter 4 Connecting to the Internet ENGLISH ...

Page 31: ...t responding 1 Simultaneously press Alt Ctrl Delete keys on the keyboard then click Task Manager 2 Select the program that is not responding then click EndTask If the keyboard is not responding press and hold the Power button on the top of your chassis until the computer shuts down Then press the Power button to turn it on I cannot connect to a wireless network using the ASUSWLAN Card on selected ...

Page 32: ... connector cable Check if your monitor is plugged to a power source properly Refer to the documentation that came with your monitor for more troubleshooting information When using multiple monitors only one monitor has display Ensure that the both monitors are powered on During POST only the monitor connected to the VGA port has display The dual display function works only under Windows When a gra...

Page 33: ...Display My speakers produce no sound Ensure that you connect your speakers to the Line out port lime on the front panel or the rear panel Check if your speak is connected to an electrical source and turned on Adjust your speakers volume Ensure that your computer s system sounds are not Muted If it is muted the volume icon is displayed as To enable the system sounds click from the Windows notificat...

Page 34: ...ower cord is not properly connected Ensure that the power cord is properly connected Use other compatible power cord PSU Power supply unit problems Contact the ASUS Service Center about installing another PSU on your computer Display Problem Possible Cause Action No display output after turning the computer on Black screen The signal cable is not connected to the correct VGA port on your computer ...

Page 35: ...Internet Service Provider ISP for the correct LAN settings Problems caused by the anti virus software Close the anti virus software Driver problems Reinstall the LAN driver Audio Problem Possible Cause Action No Audio Speaker or headphone is connected to the wrong port Refer to your computer s User Guide for the correct port Disconnect and reconnect the speaker to your computer Speaker or headphon...

Page 36: ...reezes Hard disk drive failure Send the damaged hard disk drive to ASUS Service Center for servicing Replace with a new hard disk drive Memory module problems Replace with compatible memory modules Remove the extra memory modules that you have installed then try again Contact the ASUS Service Center for assistance There is not enough air ventilation for your computer Move your computer to an area ...

Page 37: ...atest BIOS versions Computer is too noisy when in use The CPU fan has been replaced Ensure that you are using a compatible or ASUS recommended CPU fan There is not enough air ventilation for the computer Ensure that your computer is working in an area with good air flow The system temperature is too high Update the BIOS If you know how to reinstall the motherboard try to clean the inner space of t...

Page 38: ...38 Chapter 5 Troubleshooting ENGLISH ...

Page 39: ...ASUS Desktop PC Windows 10 User Manual E10435 First Edition May 2015 Copyright ASUSTeK Computer Inc All Rights Reserved Appendix Windows 10 User Manual ...

Page 40: ...ENGLISH ...

Page 41: ...ings of your Windows 10 operating system To start your Desktop PC for the first time 1 Press the power button on your Desktop PC Wait for a few minutes until the setup screen appears 2 From the setup screen pick your region and language that you want to use on your desktop PC 3 Carefully read the License Terms then tap I Accept 4 Follow the onscreen instructions to configure the following basic it...

Page 42: ...apps people or websites You can launch the Start menu in two ways Click the Start button from the lower left corner of the taskbar Press the Windows Start key on your keyboard Pinning apps to the Start screen or taskbar To pin an app to the Start screen or taskbar 1 From the Start menu click All apps then select the app that you want to pin 2 Click Pin to Start or Pin to taskbar to pin your select...

Page 43: ...access Some apps require signing in to your Microsoft account before they are fully launched Click to restore the Start screen Moving apps on the Start screen You can move apps from the Start screen simply through dragging and dropping the app to your preferred location Unpinning apps from the Start screen To unpin an app from the Start screen right click on the app to activate its settings bar th...

Page 44: ... screen or taskbar right click the app you want to unpin 2 Click Unpin from Start or Unpin this program from taskbar to remove the app from the Start screen or taskbar Using theTaskView When you have several running apps you can click from the taskbar to display all your running apps and click on an app or item to launch it If task view is disabled click ShowTaskView button to display the task vie...

Page 45: ...p PC s mouse or keyboard to activate Snap onscreen Using your mouse a Launch an app then drag and release on a screen corner to snap it in place b Snap another app to your preferred location on the screen Using your keyboard a Launch an app press and the arrow keys to select the direction where you want to snap the app in place b Snap another app using and the arrow keys ...

Page 46: ...ning app D Launches the desktop E Launches File Explorer F or W Activates the File search function H Launches Share I Launches Settings K Launches Media Connect L Activates the Lock screen M Hides all currently active screens to the taskbar P Your desktop PC is mirrored to your secondary monitor Q Launches Cortana R Launches the Run window U Launches Ease of Access Center X Launches a menu box of ...

Page 47: ...ing and reinstall options in PC Settings Refer to the steps below to use this option Back up all your data before using this option This process may take a while to complete 1 From the Start menu click Settings Update security Recovery 2 Scroll down to view the Remove everything and reinstallWindows option Under this option click Get started Launches the magnifier and zooms in your screen Zooms ou...

Page 48: ...TER INTERNATIONAL America Address 800 Corporate Way Fremont CA 94539 USA Telephone 1 510 739 3777 Fax 1 510 608 4555 Web site http www asus com us Technical Support Support fax 1 812 284 0883 Telephone 1 812 282 2787 Online support http qr asus com techserv ASUS COMPUTER GmbH Germany and Austria Address Harkort Str 21 23 D 40880 Ratingen Germany Fax 49 2102 959931 Web site http www asus com de Onl...

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