Computer appears locked up and will not turn off when the power button is pressed.
Cause Solution
Software control of the power switch is not functional. 1. Press and hold the power button for at least five
seconds until the computer turns off.
2. Disconnect the power cord from the electrical outlet.
Computer shuts down automatically.
Cause Solution
Thermal protection has been activated. 1. The computer might be in an exceedingly hot
environment. Let it cool down.
2. Clean the air vents on the front, back, or any other
vented side of the computer.
3. Ensure that there is a 10.2 cm (4 in) clearance on all
vented sides of the computer to permit the required
airflow.
4. Ensure that computers are not stacked on top of each
other or so near each other that they are subject to
each other's re-circulated or preheated air.
5. If the computer is within an enclosure, ensure that there
is proper intake and exhaust ventilation for the
enclosure.
6. Ensure that the CPU fan is plugged in.
7. Ensure that the CPU was not replaced with an
unsupported CPU
Computer will not respond to USB keyboard or mouse.
Cause Solution
Computer is in Hibernate mode. To resume from Hibernate mode, press the power button or
press any key.
CAUTION: When attempting to resume from Hibernate
mode, do not hold down the power button for more than four
seconds. Otherwise, the computer will shut down and you
will lose any unsaved data.
Solving General Problems
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