Be sure no loose connections
exist. If a KVM switching device is in use, be sure the server is
properly connected to the switch.
For rack-mounted servers, check the cables
to the switch box and be sure the switch is correctly set for the
server.
For tower model servers, check the cable
connection from the input device to the server.
If a KVM switching device is in use, be sure
all cables and connectors are the proper length and are supported
by the switch. Refer to the switch documentation.
Be sure the current drivers for the
operating system are installed.
Be sure the device driver is not corrupted
by replacing the driver.
Restart the system and check whether the
input device functions correctly after the server restarts.
Replace the device with a known working
equivalent device (another similar mouse or keyboard).
If the problem still occurs with the new
mouse or keyboard, the connector port on the system I/O board is
defective. Replace the board.
If the problem no longer occurs, the
original input device is defective. Replace the device.
Be sure the keyboard or mouse is connected
to the correct port. Determine whether the keyboard lights flash at
POST or the NumLock LED illuminates. If not, change port
connections.
