POST Error Messages
Diagnostic Front Panel LEDs and Audible Codes (Continued)
Activity | Beeps | Possible Cause | Recommended Action | |
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Red Power LED | 2 | Processor thermal | 1. | Ensure that the computer air vents |
flashes two times, |
| protection |
| are not blocked and the processor |
once every second, |
| activated: |
| cooling fan is running. |
followed by a two |
| A fan may be | 2. | Open hood, press power button, |
second pause. |
| blocked or not |
| and see if the processor fan spins. If |
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| turning. |
| the processor fan is not spinning, |
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| OR |
| make sure the fan's cable is |
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| The heatsink/fan |
| plugged onto the system board |
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| header. Ensure the fan is | |
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| assembly is not |
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| fully/properly seated or installed. | |
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| properly attached |
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| 3. | If fan is plugged in and seated | |
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| to the processor. | ||
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| properly, but is not spinning, then |
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| replace processor fan. |
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| 4. | Reseat processor heatsink and |
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| verify that the fan assembly is |
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| properly attached. |
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| 5. | Contact an authorized reseller or |
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| service provider. |
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Red Power LED | 3 | Processor not | 1. | Check to see that the processor is |
flashes three times, |
| installed (not an |
| present. |
once every second, |
| indicator of bad | 2. | Reseat the processor. |
followed by a two |
| processor). | ||
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second pause.
Troubleshooting Guide | www.hp.com |