Post Error Messages
Diagnostic Keyboard LEDS, Front Panel LEDs and Audible Codes
Activity | Beeps | Probable Cause | Recommended Action |
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Yellow or Green | None | System memory error. | 1. Check memory module |
Power LED |
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| (see the relevant section |
flashes every |
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| of the Hardware |
second (on select |
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| Reference Guide). |
models.) |
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| 2. Remove and reseat |
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| |
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| memory module. |
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| 3. See the “Solving Memory |
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| Problems” section of this |
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| guide. |
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Red or Yellow | None | Processor unseated. | Reseat processor in system |
Power LED On |
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| board. |
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Red or Yellow | None | Computer overheated. | 1. Install computer cover |
Power LED is: |
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| or access panel if |
1. Flashing four |
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| necessary. |
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| |
times per |
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| 2. Ensure that computer air |
second, Or |
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| vents are not blocked and |
2. Flashing two |
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| internal fan is running. |
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| |
times one |
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second apart, |
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followed by a |
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two second |
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pause, Or |
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3. Not flashing. |
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Troubleshooting Guide |
