Solving Power Problems
Also see "Solving Battery and Battery Gauge Problems" in this chapter.
Table 2-23. Solving Power Problems
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Problem Probable Cause Solution(s)
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Computer won't turn Computer is not Insert battery or connect
on and battery pack connected to a power an external power source.
is not inserted. source.
Power cords to the Ensure that power cords
external power source connecting the computer
are unplugged. and the external power
source are plugged in
properly.
System board is 1. See section
defective. "Measuring Power
Signals" to check for
proper voltages.
2. Replace system board
and restart.
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Computer turned off System initiated Replace the battery pack
while it was left Hibernation due to a with a fully charged
unattended and the critical low-battery battery pack or connect
power icon is off. condition. the computer to an
external power source.
Then turn on the
computer.
System initiated Turn on the computer.
Hibernation after a
preset timeout.
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Computer initiated The unit temperature was Computer is in an
Standby exceeded. exceedingly hot
automatically or environment. Let the
turned off computer cool down.
automatically.
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