22
Solving Problems
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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
.
Lockups and Software Problems
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions
located in the
Product Information Guide
.
The computer does not start up
The computer stops responding
NOTICE:
You might lose data if you are unable to perform an operating system shutdown.
C
HECK
THE
KEYBOARD
CABLE
—
• Ensure that the keyboard cable is firmly connected to the computer.
• Shut down the computer (see page 43), reconnect the keyboard cable as shown on the setup diagram 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.
T
EST
THE
KEYBOARD
—
Connect a properly working keyboard to the computer, and try using the
keyboard.
R
UN
THE
H
ARDWARE
T
ROUBLESHOOTER
—
See page 42.
C
HECK
THE
D
IAGNOSTIC
L
IGHTS
—
See page 33.
E
NSURE
THAT
THE
P
OWER
C
ABLE
IS
F
IRMLY
C
ONNECTED
TO
T
HE
C
OMPUTER
AND
TO
T
HE
E
LECTRICAL
O
UTLET
T
URN
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.