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48 Advanced Troubleshooting
A possible graphics failure has occurred.
If the problem persists,
contact Dell for
technical assistance.
A possible floppy drive 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 "Installing Memory" on
page 67), 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
"Installing Memory" on page 67).
• If the problem persists,
contact Dell for
technical assistance.
Memory modules are detected, but a memory
configuration or compatibility error exists.
• Ensure that no special memory
module/memory connector placement
requirements exist (see "DDR2 Memory
Overview" on page 66).
• Verify that the memory modules that you are
installing are compatible with your computer
(see "DDR2 Memory Overview" on page 66).
• If the problem persists,
contact Dell for
technical assistance.
Light Pattern Problem Description Suggested Resolution