Dell Dimension 8400 Owner's Manual - Page 50
Light Pattern, Problem Description, Suggested Resolution, the computer. - graphics card
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www.dell.com | support.dell.com Light Pattern ABCD ABCD ABCD Problem Description Suggested Resolution Memory modules are detected, but a memory failure has occurred. • If you have two or more memory modules installed, remove the modules, reinstall one module (see page 73), 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 73). • If the problem persists, contact Dell (see page 123). A possible graphics card failure has occurred. • If the computer has a graphics card, remove the card, reinstall it (see page 81), 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 123). A possible floppy or hard drive failure has occurred. 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. = yellow = green = off 50 Advanced Troubleshooting