Dell Precision 490 Desktop Quick Reference Guide - Page 39
Diagnostic Lights, Power, Light, Problem Description, Suggested Resolution, for technical assistance.
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Diagnostic Lights (blinking) (blinking) (blinking) (blinking) Power Light blinking green blinking green amber blinking amber amber Problem Description Suggested Resolution The computer is in a reduced Use one of the appropriate methods to "wake power or "sleep" state. up" the computer. See "Advanced Features" in your User's Guide. If the problem is not resolved and you are trying to wake the computer with a USB mouse or keyboard, substitute the mouse or keyboard with a working PS/2 mouse or keyboard and then try to wake the computer. The computer is in a reduced Use one of the appropriate methods to "wake power or "sleep" state. up" the computer. See "Advanced Features" in your User's Guide. If the problem is not resolved and you are trying to wake the computer with a USB mouse or keyboard, substitute the mouse or keyboard with a working PS/2 mouse or keyboard and then try to wake the computer. The BIOS is not executing. Ensure that the processor is seated correctly and restart the computer. See "Processor" in your User's Guide. If the problem is still not resolved, contact Dell for technical assistance. A possible power supply or power cable failure has occurred. Perform the procedure in "Power Problems" in your User's Guide. If the problem is still not resolved, contact Dell for technical assistance. A possible system board failure has occurred. Contact Dell for technical assistance. amber A processor mismatch exists. Perform the procedure in "Processor Problems" in your User's Guide. Quick Reference Guide 39