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48 Advanced Troubleshooting
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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 71), 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 71).
• If the problem persists, contact Dell
(see page 121).
A possible graphics card failure has
occurred.
• If the computer has a graphics card,
remove the card (see page 81),
reinstall it, 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 121).
A possible floppy or hard drive failure
has occurred.
Reseat all power and data cables and
restart the computer.
A possible USB failure has occurred. Reinstall all USB devices, check cable
connections, and then restart the
computer.
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
ABCD
ABCD
ABCD
ABCD