Dell Precision T7400 Quick Reference Guide  - Page 27

Light Pattern Problem Description Suggested Resolution Memory modules are detected, but a memory failure has occurred. • If two or more memory modules are installed, remove the modules (see "Memory" in your User's Guide), reinstall one module, and then restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error. • If available, install working memory of the same type into your computer (see "Memory" in your User's Guide). • If the problem persists, contact Dell (see "Contacting Dell" in your User's Guide). A possible graphics card failure has occurred. • Reseat any installed graphics cards (see "Cards" in your User's Guide). • If available, install a working graphics card into your computer. • If the problem persists, contact Dell (see "Contacting Dell" in your User's Guide). A possible floppy or hard drive failure has occurred. • Reseat all power and data cables and restart the computer. • If the problem persists, contact Dell (see "Contacting Dell" in your User's Guide). A possible USB failure • Reinstall all USB devices, check cable has occurred. connections, and then restart the computer. • If the problem persists, contact Dell (see "Contacting Dell" in your User's Guide). Quick Reference Guide 27