Compaq 4200 External Device Installation Problems and Solutions, Keyboard Problems and Solutions

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Table 3-33

External Device Installation Problems and Solutions

Problem Possible Cause Solution(s)

A new device is not recognized as part of the computer system.

Power switch of the new	Initiate Suspend, turn on external devices with power
external device was not turned	switches, then exit Suspend to integrate the new device.
on before the system was
turned on.

External device was connected	Windows 95: Initiate Suspend, plug in and turn on external
after system was turned on.	devices with power switches, then exit Suspend to integrate
	the new device.
	Windows NT: Power off computer and external devices.
	Power back on to integrate new device.
The signal cable or power	Ensure that all cables are properly and securely connected.
cord of the new device is	Ensure that all power cords are properly and securely
loose or disconnected.
	plugged into an electrical outlet.
The signal cable or power	Try connecting a different signal cable and/or power cord.
cord of the new device may
be defective.

Table 3-34

Keyboard Problems and Solutions

Problem Possible Cause Solution(s)

External keyboard	External keyboard may not
does not work.	be securely connected or
	may be connected to an
	incorrect external connector.

Ensure that the external keyboard is properly and securely connected to the external keyboard connector.

Table 3-35

Mouse Problems and Solutions

Problem Possible Cause Solution(s)

External mouse does	External mouse may not be
not work.	securely connected or may
	be connected to an incorrect
	external connector.

Ensure that the external mouse is securely connected to the mouse connector or the correct external connector.

Mouse was connected after	Turn off the unit, connect the mouse, then turn the unit on
system was turned on.	to integrate the mouse.

2-32 Troubleshooting