
4–14 www.hp.com Getting Started Guide
Troubleshooting
Red Power LED
blinks once every
two seconds.
None Power failure
(power supply
is
overloaded).
1. Check that the voltage
selector, located on the
rear of the power
supply, is set to the
appropriate voltage.
Proper voltage setting
depends on your
region.
2. Open the hood and
ensure the 4-wire
power supply cable is
seated into the
connector on the
system board.
3. Check if a device is
causing the problem by
removing ALL attached
devices (such as hard,
diskette, or optical
drives, and expansion
cards.) Power on the
system. If the system
enters the POST, then
power off and replace
one device at a time
and repeat this
procedure, until failure
occurs. Replace the
device that is causing
the failure. Continue
adding devices one at
a time to ensure all
devices are functioning
properly.
4. Replace the power
supply.
5. Replace the system
board.
Activity Beeps
Possible
Cause
Recommended
Action
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