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54 Solving Problems
Keyboard Problems
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
Lockups and Software Problems
CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
The computer does not start up
The computer stops responding
NOTICE: You may lose data if you are unable to perform an operating system shutdown.
CHECK THE KEYBOARD CABLE —
• Ensure that the keyboard cable is firmly connected to the computer.
• Shut down the computer (see "Turning Off Your Computer" on page 77), reconnect the keyboard cable
as shown on the setup diagram for your computer, and then restart the computer.
• Ensure that the cable is not damaged or frayed, and check cable connectors for bent or broken pins.
Straighten any bent pins.
• Remove any keyboard extension cables, and connect the keyboard directly to the computer.
TEST THE KEYBOARD — Connect a properly working keyboard to the computer, then try using the
keyboard.
RUN THE HARDWARE TROUBLESHOOTER — See "Resolving Software and Hardware Incompatibilities"
on page 72.
CHECK THE DIAGNOSTIC LIGHTS — See "Diagnostic Lights" on page 65.
ENSURE THAT THE POWER CABLE IS FIRMLY CONNECTED TO THE COMPUTER AND TO THE
E
LECTRICAL OUTLET
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, and then restart your computer.