Getting Started - HP Retail System series

2 Basic troubleshooting
You can nd troubleshooting information in the comprehensive Maintenance and Service Guide (English only).
Go to http://www.hp.com/support, select Find your product, and then following the on-screen instructions.
Interpreting POST diagnostic front panel LEDs and audible codes
If you see ashing LEDs on the front of the computer or if you hear beeps, see the Maintenance and Service
Guide (English only) for interpretation and recommended action.
Visual inspection: No boot, no power, no video
If you encounter problems with the computer or software, see the following list of general suggestions before
taking further action:
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Conrm that the computer is plugged into a working AC outlet.
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Conrm that the computer is turned on and the power light is on.
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If the system does not boot, press and hold any key. If the system beeps, then the keyboard is operating
correctly.
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Check all cable connections for loose connections or incorrect connections.
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Wake the computer by pressing any key on the keyboard or pressing the power button. If the system
remains in sleep mode, shut down the computer by pressing and holding the power button for at least
four seconds. Then press the power button again to restart the computer. If the system will not shut
down, unplug the power cord, wait a few seconds, and then plug it in again. The computer will restart if
automatic start on power loss is set in Computer Setup. If the computer does not restart, press the
power button.
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Recongure the computer after installing a non–Plug and Play option.
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Be sure that all the needed device drivers have been installed. For example, if you are using a printer,
you need a driver for that printer model.
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Remove any media from the system before turning it on.
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If you have installed an operating system other than the factory-installed operating system, conrm
that it is supported on the system.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of system board or component damage, always disconnect the power cord from the
power source before opening the computer.
Finding more information
Various publications are available on the computer hard drive. To access the publications:
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Select the Start button, select All Apps, select HP Help and Support, and then select
HP Documentation.
NOTE: Not all of the publications listed are included on all models.
Interpreting POST diagnostic front panel LEDs and audible codes 3