Chapter
4
Trouble
Shooting
4-1
4. Trouble Shooting
PROBLEM
No power to the system at all. Power light does not illuminate, fan inside power
supply does not turn on. Indicator light on keyboard does not turn on.
PROBABLE CAUSE
DIAGNOSIS
SOLUTION
Power cable is
unplugged.
Visually inspect power
cable.
Make sure power cable is
securely plugged in.
Defective power cable.
Visually inspect the cable;
try another cable.
Replace cable.
Power supply failure.
Power cable and wall
socket are OK, but system
is still dead.
Contact technical support.
Faulty wall outlet; circuit
breaker or fuse blown.
Plug in device known to
work in socket and test
Use different socket,
repair outlet, reset circuit
breaker or replace fuse.
PROBLEM
System inoperative. Keyboard lights are on, power indicator lights are lit, hard
drive is spinning.
PROBABLE CAUSE
DIAGNOSIS
SOLUTION
Memory DIMM is
partially dislodged from
the slot on the
motherboard.
Turn off computer. Take
cover off system unit.
Check the DIMM to
ensure it is securely
seated in the slot.
Using even pressure on
both ends of the DIMM,
press down firmly until the
module snaps into place.
