Dell OptiPlex 755 Quick Reference Manual page 68

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68
Quick Reference Guide
Problem Description
A possible graphics card failure
has occurred.
A possible floppy drive or hard
drive failure has occurred.
A possible USB failure has
occurred.
No memory modules are
detected.
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.
Reinstall all USB devices and
check all cable connections.
• 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).