2–10 Getting Started
Basic Troubleshooting
Red or Yellow
Power LED
flashes every
2 seconds (on
select models.)
None Power supply
overloaded.
1. Push in power button. LED
should be green.
2. Remove all AC power
from computer, wait 30
seconds, then apply
power.
3. Remove load from power
supply by removing
options one at a time
until computer runs.
4. Check for damage to
system board.
5. Replace system board.
6. Replace power supply.
Flashing Power
and Hard Drive
Green LEDs.
None Unseated riser board. 1. Remove riser board.
2. Wipe connector.
3. Reinstall riser board (see
the
Hardware Reference
Guide
for directions on
removing the riser board).
Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes
(Continued)
Activity Beeps Probable Cause Recommended Action
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