Dell Dimension 5150C Owner's Manual - Page 46

Light Pattern Problem Description Suggested Resolution A possible graphics card failure has occurred. • If the computer has a graphics card, remove the card, reinstall it (see page 68), 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 111). A possible floppy or hard drive failure has Reseat all power and data cables and occurred. restart the computer. A possible USB failure has occurred. Reinstall all USB devices, check cable connections, and then restart the computer. No memory modules are detected. Memory modules are detected, but a memory configuration or compatibility error exists. • If you have two or more memory modules installed, remove the modules, reinstall one module (see page 66), and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error. • If available, install properly working memory of the same type into your computer (see page 65). • If the problem persists, contact Dell (see page 111). • Ensure that no special memory module/memory connector placement requirements exist (see page 65). • Verify that the memory modules that you are installing are compatible with your computer (see page 65). • If the problem persists, contact Dell (see page 111). 46 Troubleshooting Tools