Dell Dimension 2400 Owner's Manual - Page 37

Light Pattern ABCD Problem Description A possible floppy or hard drive failure has occurred. Suggested Resolution Reseat all power and data cables and restart the computer. ABCD A possible USB failure has occurred. Reinstall all USB devices, check cable connections, and then restart the computer. ABCD ABCD = yellow = green = off No memory modules are detected. Memory modules are detected, but a memory configuration or compatibility error exists. • Reinstall all memory modules (see page 64) and restart the computer. • To eliminate the possibility of a faulty memory connector, remove all memory modules, reinstall one memory module (if the computer supports a single module) (see page 64), and then restart the computer. If the computer starts normally, move the memory module to a different connector and restart the computer. Continue until you have identified a faulty connector or reinstalled all modules without error. • Ensure that no special memory module/memory connector placement requirements (see page 64) exist. • Verify that the memory modules that you are installing are compatible with your computer (see page 70). • If the problem persists, contact Dell (see page 78). Advanced Troubleshooting 37