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46 Troubleshooting Tools
A possible graphics card failure has
occurred.
• If the computer has a graphics card,
remove the card, reinstall it (see
page 68), 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 111).
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.
No memory modules are detected.
• If you have two or more memory
modules installed, remove the
modules, reinstall one module (see
page 66), 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 65).
• If the problem persists, contact Dell
(see page 111).
Memory modules are detected, but a
memory configuration or compatibility
error exists.
• Ensure that no special memory
module/memory connector placement
requirements exist (see page 65).
• Verify that the memory modules that
you are installing are compatible with
your computer (see page 65).
• If the problem persists, contact Dell
(see page 111).
Light Pattern Problem Description Suggested Resolution