w w w . d e l l . c o m s u p p o r t . d e l l . c o m
Power Light | Problem Description | Suggested Resolution |
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Blinking yellow | A power supply or system board | Check "Diagnostic Lights" on page 20 to see |
| failure has occurred. | if the specific problem is identified. See |
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| "Power Problems" in your online User’s |
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| Guide. |
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Solid green and a | A problem was detected while the | See "Beep Codes" on page 22 for instructions |
beep code during | BIOS was executing. | on diagnosing the beep code. Also, check |
POST |
| "Diagnostic Lights" on page 20 to see if the |
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| specific problem is identified. |
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Solid green power | The monitor or the graphics card may | Check "Diagnostic Lights" on page 20 to see |
light, no beep code | be faulty or incorrectly installed. | if the specific problem is identified. |
and no video during |
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POST |
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Solid green power | An integrated system board device | Check "Diagnostic Lights" on page 20 to see |
light and no beep | may be faulty. | if the specific problem is identified. If the |
code but the |
| problem is not identified, contact Dell for |
computer locks up |
| technical assistance. |
during POST |
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Diagnostic Lights
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
To help you troubleshoot a problem, your computer has four lights labeled "A," "B," "C," and "D" on the back panel. The lights can be yellow or green. When the computer starts normally, the patterns or codes on the lights change as the boot process completes. If the POST portion of system boot completes successfully, all four lights display solid green. If the computer malfunctions during the POST process, the pattern displayed on the lights may help identify where in the process the computer halted.
Light |
| Problem Description | Suggested Resolution |
Pattern |
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| off | The computer is in a normal off | • Verify that the computer is plugged into a working |
| condition or a possible | electrical outlet and that you have pressed the power | |
| off | ||
| failure has occurred. | button. | |
| off | ||
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| off |
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20
Quick Reference Guide
