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Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Solution
Graphics card is not seated properly or is bad, or system board
is bad.
For systems with a graphics card:
1.
Reseat the graphics card. Power on the system.
2.
Replace the graphics card.
3.
Replace the system board.
For systems with integrated graphics, replace the system
board.
Power LED flashes Red ten times, once every second, followed by a two second pause, and the computer beeps ten
times. (Beeps stop after fifth iteration but LEDs continue flashing.)
Cause
Solution
Bad option card.
1.
Check each option card by removing the cards one at time
(if multiple cards), then power on the system to see if fault
goes away.
2.
Once bad card is identified, remove and replace bad
option card.
3.
Replace the system board.
Interpreting POST Diagnostic Front Panel LEDs and Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
WARNING!
When the computer is plugged into an AC power source, voltage is always applied
to the system board. To reduce the risk of personal injury from electrical shock and/or hot
surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system
components to cool before touching.
Look for the LED between the DIMM sockets. If the LED is illuminated, the system still has power.
Power off the computer and remove the power cord before proceeding.
NOTE:
If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel
of the computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be
performed.
Not all diagnostic lights and audible codes are available on all models.
Table 3
Diagnostic Front Panel LEDs and Audible Codes
Activity
Beeps
Possible Cause
Recommended Action
Green Power LED On.
None
Computer on.
None
Table 2
Solving Hardware Installation Problems (continued)
ENWW
Basic Troubleshooting
13
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