w w w . d e l l . c o m s u p p o r t . d e l l . c o m
Po w e r L i g h t C o d e s ( c o n t in u e d )
Power Light | Cause |
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Blinking yellow | There is a system board or power supply failure. |
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Basic Checks:
•Check the diagnostic lights to see if the specific problem is identified.
•Test the electrical outlet: ensure that the electrical outlet is working by testing it with a different device such as a lamp.
•While diagnosing the problem, connect the computer power cable directly to a known working electrical outlet to ensure that the computer turns on. Do not connect it to a power protection device, UPS, power strip, or extension cord.
•Ensure that all power cables are firmly connected, verifying that each power cable is adequately connected at the computer device and to the electrical outlet.
•Check for interference: electrical appliances on the same circuit or operating in close proximity to the computer can cause interference.
•Test the power cable: swap the power cables between the computer and the monitor to see whether the problem symptoms change.
If the problem still exists after you complete the basic checks, fill out the Diagnostics Checklist as you perform the following steps:
1Turn off the computer and devices, disconnect them from their electrical outlets, and wait 10 to 20 seconds.
2Reconnect the computer and devices to their electrical outlets.
3Turn on the computer.
Does the power light on the front of the computer light up? Yes. The problem is resolved.
No. Go to step 4.
4Turn off the computer, swap the power cable with a known working cable such as the monitor cable, and then turn on the computer.
Is the computer working properly?