Dell GX240 User's Guide - Page 207

Back Panel Light Codes Light pattern off off off off green yellow yellow yellow yellow green yellow yellow green green yellow yellow yellow yellow green yellow Problem Description Suggested Resolution Normal off condition or possible pre-BIOS failure Possible BIOS failure Verify that the computer is plugged into a working outlet and that you have pressed the power button. Contact Dell for technical assistance. Possible processor failure Possible memory failure Reseat the processor(s) and the terminator card (if present), and restart the computer to retest. Reseat all DIMMs and restart the computer to retest. Possible expansion card Remove each expansion failure card individually, and restart the computer to retest. Reinstall the expansion card(s) one at a time, and restart the computer to retest. Move each expansion card one at a time to another PCI slot, and restart the computer to retest. Solving Problems 205