Keyboard Problems; Fan Problems - Dell OptiPlex 745 User Manual

Solving Problems: Dell OptiPlex 745 User's Guide
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Keyboard Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions located in the Product Information Guide.
Check the keyboard cable —
Ensure that the keyboard cable is firmly connected to the computer.
●
Shut down the computer, reconnect the keyboard cable as shown in the Quick
●
Reference Guide for your computer, and then restart the computer.
Check the cable connector for bent or broken pins and for damaged or frayed
●
cables. Straighten bent pins.
Remove keyboard extension cables and connect the keyboard directly to the
●
computer.
Test the keyboard —
using the keyboard. If the new keyboard works, the original keyboard is faulty.
Run the Dell Diagnostics —
Check for software and hardware conflicts —
Incompatibilities.

Fan Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the
electrical outlet before opening the cover.
NOTICE: To prevent static damage to components inside your computer, discharge static
electricity from your body before you touch any of your computer's electronic components. You
can do so by touching an unpainted metal surface on the computer.
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