Advanced Troubleshooting 37
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.
• Reinstall all memory modules (see
page 64) and restart the computer.
• To eliminate the possibility of a
faulty memory connector, remove
all memory modules, reinstall one
memory module (if the computer
supports a single module) (see
page 64), and then restart the
computer. If the computer starts
normally, move the memory module
to a different connector and restart
the computer. Continue until you
have identified a faulty connector or
reinstalled all modules without
error.
Memory modules are detected, but a
memory configuration or
compatibility error exists.
• Ensure that no special memory
module/memory connector
placement requirements (see
page 64) exist.
• Verify that the memory modules
that you are installing are
compatible with your computer (see
page 70).
• If the problem persists, contact Dell
(see page 78).
Light Pattern Problem Description Suggested Resolution
= yellow
= green
= off
ABCD
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