Activity | Beeps | Possible cause | Recommended action | |
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but LEDs continue until problem |
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| 3. | Replace the system board. |
is solved. |
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System does not power on and | None | System unable to power on. | Press and hold the power button for less than 4 | |
LEDs are not flashing. |
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| seconds. If the hard drive LED turns white, the power | |
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| button is working correctly. Try the following: | |
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| 1. | Check that the voltage selector (some models), |
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| located on the rear of the power supply, is set |
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| to the appropriate voltage. Proper voltage |
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| setting depends on your region. |
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| 2. | Replace the system board. |
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| OR |
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| Press and hold the power button for less than 4 | |
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| seconds. If the hard drive LED does not turn on white | |
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| then: |
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| 1. | Check that the unit is plugged into a working |
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| AC outlet. |
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| 2. | Open hood and check that the power button |
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| harness is properly connected to the system |
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| board. |
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| 3. | Check that both power supply cables are |
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| properly connected to the system board. |
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| 4. | Check to see if the 5V_aux light on the system |
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| board is turned on. If it is turned on, then |
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| replace the power button harness. If the |
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| problem persists, replace the system board. |
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| 5. | If the 5V_aux light on the system board is not |
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| turned on, remove the expansion cards one at |
a time until the 5V_aux light on the system board turns on. It the problem persists, replace the power supply.
Interpreting POST diagnostic front panel LEDs and audible codes 207