The Computer Is Unusually Warm - HP Compaq tc4400 Troubleshooting Manual

The computer is unusually warm.

It is normal for the computer to feel warm to the touch while it
is in use. But if the computer feels unusually warm, it may be
overheating because a vent is blocked.
If you suspect that the computer is overheating, allow the
computer to cool to room temperature. Then be sure to keep all
vents free from obstructions while you are using the computer.
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CAUTION: To prevent overheating, do not obstruct vents. Use the
computer only on a hard, flat surface. Do not allow another hard
surface, such as a printer, or a soft surface, such as a pillow or a thick
rug or clothing, to block airflow.
✎
The computer fan starts up automatically to cool internal
components and prevent overheating. It is normal for the internal
fan to cycle on and off during routine operation.
Troubleshooting
Quick checklist
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