Dell Precision NT499, Руководство пользователя

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102
Troubleshooting Tools
A possible USB failure
has occurred. • Reinstall all USB devices, check cable
connections, and then restart the
computer.
• If the problem persists, contact Dell
(see "Contacting Dell" on page 269 ).
No memory modules
are detected. • If two or more memory modules are
installed, remove the modules (see
"Removing a Memory Module" on
page 160), then reinstall one module
(see "Installing a Memory Module" on
page 160) and restart the computer. If
the computer starts normally,
continue to install additional memory
modules (one at a time) until you
have identified a faulty module or
reinstalled all modules without error.
• If available, install working memory of
the same type into your computer (see
"Memory" on page 157).
• If the problem persists, contact Dell
(see "Contacting Dell" on page 269 ).
System board failure
has occurred. Contact Dell (see "Contacting Dell" on
page 269).
Memory modules are
detected, but a
memory
configuration or
compatibility error
exists. • Ensure that no special requirements
for memory module/connector
placement exist (see "Memory" on
page 157).
• Ensure that the memory you are using
is supported by your computer (see
"Memory" on page 33).
• If the problem persists, contact Dell
(see "Contacting Dell" on page 269).
A possible system
board resource and/or
hardware failure has
occurred. • Perform the procedures in "Restoring
Your Operating System" on page 136.
• If the problem persists, contact Dell
(see "Contacting Dell" on page 269).
Light Pattern Problem Description Suggested Resolution