Dell DJ42F61 Owner's Manual - Page 34

Light Pattern ABCD ABCD Problem Description A possible graphics card failure has occurred. A possible floppy or hard drive failure has occurred. Suggested Resolution • If the computer has a graphics card, remove the card, reinstall it (see page 56), and then restart the computer. • If the problem still exists, install a graphics card that you know works and restart the computer. • If the problem persists or the computer has integrated graphics, contact Dell (see page 89). Reseat all power and data cables and restart the computer. A possible USB failure has occurred. ABCD Reinstall all USB devices, check cable connections, and then restart the computer. ABCD = yellow = green = off Memory modules are detected, but a memory configuration or compatibility error exists. • Ensure that no special memory module/memory connector placement requirements exist (see page 53). • Verify that the memory modules that you are installing are compatible with your computer (see page 53). • If the problem persists, contact Dell (see page 89). 34 Advanced Troubleshooting