HP 6720t Mobile Quick troubleshooting, Computer is unable to start up, Computer screen is blank

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466202-002.book Page 47 Wednesday, February 20, 2008 11:44 PM

Troubleshooting

Quick troubleshooting

The computer is unable to start up

When the computer is turned on, the power light turns on. If the computer and the power light do not turn on when you press the power button, adequate power may not be available to the computer.

The following suggestions may help you determine why the computer will not start up:

If the computer is plugged into an AC outlet, be sure that the AC outlet is providing adequate power by plugging another electrical device into the outlet.

If the computer is running on battery power or is plugged into an external power source other than an AC outlet, plug the computer into an AC outlet using the AC adapter. Be sure that the power cord and AC adapter connections are secure.

Use only the AC adapter provided with this computer or one approved for this computer.

If the computer is running on battery power, try the following procedures in the sequence provided, until startup occurs:

If the battery light on the front of the computer is blinking amber, the battery has reached a low battery level, which may not allow the computer to start up. Plug the computer into an AC outlet using the AC adapter, start the computer, and allow the battery to charge.

Remove the battery and plug the computer into an AC outlet using the AC adapter. If you can turn the computer on, the battery may need to be replaced.

The computer screen is blank

If the computer screen is blank but you have not turned off the computer, one or more of these settings may be the cause:

The computer may be in Standby.

To exit Standby, briefly press the power button.

 

 

Getting Started

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Contents HP Compaq 6720t Mobile Thin Client Getting StartedBook Page ii Wednesday, February 20, 2008 1144 PM Contents Book Page iv Wednesday, February 20, 2008 1144 PM Unpack the box Basic setupInsert the battery Connect the computer to external power Open the computer Turn on the computer Enter your logon information Automatic logonManual logon Begin managing your network network administrators only Administrator logonConnect to a computer network Download the Deployment Solution console Top components Quick tourFront components Pointing devicesLeft-side components Rear components Right-side componentsBottom components Wireless antennae Product information Regulatory, safety, and environmental notices Important display informationRegulatory notices Modifications Federal Communications Commission noticeBook Page 16 Wednesday, February 20, 2008 1144 PM Canadian notices Brazilian noticeAvis Canadien European Union noticesBook Page 19 Wednesday, February 20, 2008 1144 PM Products with 2.4-GHz wireless LAN devices Ergonomics notice Japanese notices Indian noticeBook Page 23 Wednesday, February 20, 2008 1144 PM Book Page 24 Wednesday, February 20, 2008 1144 PM Wireless WAN certification markings Taiwan notice Korean notice Singaporean wireless noticeBattery notices Airline travel noticeEnergy Star compliance Modem notices Laser complianceModem statements Telecommunications device approvalsModem declarations Product information Getting Started Book Page 32 Wednesday, February 20, 2008 1144 PM Book Page 33 Wednesday, February 20, 2008 1144 PM Book Page 34 Wednesday, February 20, 2008 1144 PM Canadian modem statements Japanese modem statements New Zealand modem statements Voice support Power cord noticesSafety notices Heat-related safety warning notice Battery noticesMacrovision Corporation notice Cleaning the keyboard Headset and earphone volume level noticeEnvironmental notices Battery disposal Electronic hardware and battery recyclingToxic and Hazardous Substances and Elements Chinese material content declarationsBook Page 43 Wednesday, February 20, 2008 1144 PM Perchlorate material special handling may apply Wireless CardsOperating environment Rated input powerBook Page 46 Wednesday, February 20, 2008 1144 PM Quick troubleshooting Computer is unable to start upComputer screen is blank Computer is on but not responding Wireless network connection is not working Computer is unusually warmSome external devices are not working Contacting technical support Index Index Getting Started Index-3 Book Page 4 Wednesday, February 20, 2008 1144 PM
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