Dell Precision 650 Setup and Quick Reference Guide - Page 36
A B C D, yellow, green - bios
View all Dell Precision 650 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 36 highlights
www.dell.com | support.dell.com Diagnostic Light Codes Before POST Light Pattern A B C D A B C D A B C D A B C D A B C D = yellow = green = off Problem Description No electrical power is supplied to the computer. The computer is in a normal off condition; the computer is connected to its electrical outlet. The computer is in a reduced power or "sleep" state. The BIOS is not executing. A possible power supply or power cable failure has occurred. Suggested Resolution Connect the computer to its electrical outlet. Ensure that the front-panel power light is on. If the power light is off, ensure that the computer is connected to a working electrical outlet, and then press the power button. If the problem is still not resolved, contact Dell for technical assistance. Press the power button to turn the computer on. If the computer does not turn on, ensure that the frontpanel power light is on. If the power light is off, ensure that the computer is connected to a working electrical outlet, and then press the power button. If the problem is still not resolved, contact Dell for technical assistance. Use one of the appropriate methods to "wake 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 try to wake the computer. If the problem is still not resolved, contact Dell for technical assistance. Ensure that the microprocessor is seated correctly and restart the computer. If the problem is still not resolved, contact Dell for technical assistance. Perform the procedure in "Power Problems" in the User's Guide. If the problem is still not resolved, contact Dell for technical assistance. 36 Setup and Quick Re ference Guide