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Setup and Quick Reference Guide 31
A possible graphics card failure has occurred. Reinstall the graphics card and restart the
computer.
If the problem still exists, install a graphics
card that you know works and restart the
computer.
If the problem persists, contact Dell.
A possible floppy or hard drive failure has
occurred.
Check all power and data cable connections,
and then 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.
1 Remove and reinstall all memory modules.
Ensure that all the connector tabs are
locked. For optimal performance, install
the DIMMs in pairs (1 and 2 and 3 and 4).
2 Restart the computer.
System board failure has occurred. Perform the procedures in “System Board
Problems” in your User’s Guide.
If the problem persists, contact Dell.
Memory modules are detected, but a memory
configuration or compatibility error exists.
Ensure that there are no special memory
module/memory connector placement
requirements. See “Memory” in your User’s
Guide.
Reinstall the memory modules, and then
restart the computer.
If the problem persists, contact Dell.
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
A B C D
A B C D
A B C D
A B C D
A B C D
A B C D