The Computer Is On But Is Not Responding; The Computer Is Unusually Warm; An External Device Is Not Working - HP Compaq Getting Started

The computer is on but is not responding

If the computer is on but is not responding to software or keyboard commands, try the
following emergency shutdown procedures in the sequence provided, until shutdown occurs:
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CAUTION: Emergency shutdown procedures will result in the loss of unsaved information.
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Press and hold the power button on the computer for at least 5 seconds.
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Disconnect the computer from external power and remove the battery.

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, turn off the computer to 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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WARNING: To reduce the possibility of heat-related injuries or of overheating the
computer, do not place the computer directly on your lap or obstruct the computer
air vents. Use the computer only on a hard, flat surface. Do not allow another hard
surface, such as an adjoining optional printer, or a soft surface, such as pillows or
rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the
skin or a soft surface, such as pillows or rugs or clothing, during operation. The
computer and the AC adapter comply with the user-accessible surface temperature
limits defined by the International Standard for Safety of Information Technology
Equipment (IEC 60950).
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The fan in the computer 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.

An external device is not working

Follow these suggestions if an external device does not function as expected:
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Turn on the device according to the manufacturer's instructions.
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Be sure that all device connections are secure.
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Be sure that the device is receiving electrical power.
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Be sure that the device, especially if it is older, is compatible with the operating system.
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Be sure that the correct drivers are installed and updated.
Getting Started
Product Information and Troubleshooting
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