POST Error Messages
Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity | Beeps | Possible Cause | Recommended Action | |
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System does not | None | System unable to | Press and hold the power button for less | |
power on and LEDs |
| power on. | than 4 seconds. If the hard drive LED | |
are not flashing. |
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| turns green, then: | |
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| 1. | Check that the voltage selector, |
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| located on the rear of the power |
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| supply, is set to the appropriate |
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| voltage. Proper voltage setting |
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| depends on your region. |
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| 2. | Remove the expansion cards one at |
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| a time until the 3V_aux light on the |
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| system board turns on. |
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| 3. | Replace the system board. |
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| OR |
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Press and hold the power button for less than 4 seconds. If the hard drive LED does not turn on green then:
1. Check that the unit is plugged into a working AC outlet.
2. Open hood and check that the power button harness is properly connected to the system board.
3. Check that both power supply cables are properly connected to the system board.
4. Check to see if the 3V_aux light on the system board is turned on. If it is turned on, then replace the power button harness.
5. If the 3V_aux light on the system board is not turned on, then replace the power supply.
6. Replace the system board.
www.hp.com | Troubleshooting Guide |