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| Troubleshooting Without Diagnostics |
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Solving General Problems (Continued) |
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Problem | Cause | Solution | |
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System does not power | System unable to power | Press and hold the power button for | |
on and the LEDs on the | on. | less than 4 seconds. If the hard drive | |
front of the computer |
| LED turns green, then: | |
are not flashing. |
| 1. | Check that the voltage selector, |
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| located on the rear of the power |
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| supply on select models, is set to |
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| the appropriate voltage. Proper |
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| voltage setting depends on your |
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| region. |
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| 2. | Remove the expansion cards one |
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| at a time until the 5V_aux light on |
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| the 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 | |
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| less than 4 seconds. If the hard drive | |
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| LED does not turn on green then: | |
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| 1. | Check that the unit is plugged |
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| into a working AC outlet. |
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| 2. | Open hood and check that the |
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| power button harness is properly |
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| connected to the system board. |
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| 3. | Check that both power supply |
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| cables are properly connected to |
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| the system board. |
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| 4. | Check to see if the 5V_aux light |
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| on the system board is turned on. |
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| If it is turned on, then replace the |
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| power button harness. |
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| 5. | If the 5V_aux light on the system |
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| board is not turned on, then |
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| replace the power supply. |
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| 6. | Replace the system board. |
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Troubleshooting Guide | www.hp.com |