Dell OptiPlex 170L Quick Reference Guide - Page 20

www.dell.com | support.dell.com X6741bk0.book Page 20 Wednesday, September 22, 2004 1:55 PM Power Light Problem Description Suggested Resolution Blinking yellow A power supply or system board failure has occurred. Check "Diagnostic Lights" on page 20 to see if the specific problem is identified. See "Power Problems" in your online User's Guide. Solid green and a beep code during POST A problem was detected while the BIOS was executing. See "Beep Codes" on page 22 for instructions on diagnosing the beep code. Also, check "Diagnostic Lights" on page 20 to see if the specific problem is identified. 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 POST Solid green power light and no beep code but the computer locks up during POST An integrated system board device may be faulty. Check "Diagnostic Lights" on page 20 to see if the specific problem is identified. If the problem is not identified, contact Dell for technical assistance. 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 Pattern off off off off Problem Description Suggested Resolution The computer is in a normal off condition • Verify that the computer is plugged into a working or a possible pre-BIOS failure has electrical outlet and that you have pressed the occurred. power button. 20 Quick Reference Guide