Dell OptiPlex 755 Quick Reference Guide - Page 68
has occurred., check all cable connections.
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Power Light Problem Description A possible graphics card failure has occurred. A possible floppy drive or hard drive failure has occurred. Suggested Resolution • Reseat any installed graphics cards (see the "Cards" information for your system). • If available, install a working graphics card into your computer. • If the problem persists, contact Dell (see "Contacting Dell" in the User's Guide). Reseat all power and data cables. A possible USB failure has occurred. Reinstall all USB devices and check all cable connections. No memory modules are detected. • If two or more memory modules are installed, remove the modules (see "Removing Memory" in the User's Guide), then reinstall one module (see "Installing Memory" in the User's Guide) and 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 "Installing Memory" in the User's Guide). • If the problem persists, contact Dell (see "Contacting Dell" in the User's Guide). 68 Quick Reference Guide