Dell Precision 390 - Manual (Page 116)

Keyboard Problems
Lockups and Software Problems
The computer does not start up
The computer stops responding
A program stops responding
If you have problems with a Dell-provided IEEE 1394 device —
If you have problems with an IEEE 1394 device not provided by Dell —
Contact Dell (see Contacting Dell ) or the IEEE 1394 device manufacturer.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Check the keyboard cable —
l Ensure that the keyboard cable is firmly connected to the computer.
l Shut down the computer (see Turn Off Your Computer ), reconnect the keyboard cable as shown in the Quick Reference Guide for your
computer, and then restart the computer.
l Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins.
l Remove keyboard extension cables and connect the keyboard directly to the computer.
Test the keyboard — Connect a properly working keyboard to the computer, and try using the keyboard. If the new keyboard works, the
original keyboard is faulty.
Check for Software and Hardware Conflicts — See Resolving Software and Hardware Incompatibilities .
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Check the Diagnostic Lights —
See Diagnostic Lights
Ensure that the power cable is firmly connected to the computer and to the electrical outlet
NOTICE: You might lose data if you are unable to perform an operating system shutdown.
Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold
the power button for at least 8 to 10 seconds until the computer turns off. Then restart your computer.
End the program —