HP Compaq dx2200 MT Troubleshooting Manual page 7

Troubleshooting
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computer will restart if automatic start on power loss is set in
Computer Setup. If it does not restart, press the power button to
start the computer.
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Reconfigure the computer after installing a non–plug and play
expansion board or other option. See
Installation Problems"
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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
model printer.
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Remove all bootable media (diskette, CD, or USB device) 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, check to be sure that it is
supported on the system.
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If the system has multiple video sources (embedded, PCI, or
PCI-Express adapters) installed (PCI-Express on some models
only) and a single monitor, the monitor must be plugged into the
monitor connector on the source selected as the primary VGA
adapter. During boot, the other monitor connectors are disabled
and if the monitor is connected into these ports, the monitor will
not function. You can select which source will be the default
VGA source in Computer Setup.
CAUTION: When the computer is plugged into an AC power source,
there is always voltage applied to the system board. You must disconnect
the power cord from the power source before opening the computer to
prevent system board or component damage.
www.hp.com
"Solving Hardware
for instructions.
Troubleshooting Guide