3-8
Dell PowerEdge 4300 Systems Service Manual
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Improperly installed
or faulty expansion
card
Reinstall the expansion
card(s). If the problem
persists, replace the
expansion card(s).
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Loose or improperly
connected keyboard
cable connector,
defective keyboard,
or defective
keyboard/mouse
controller (defective
system board)
Check the keyboard
cable connection.
Replace the keyboard. If
the problem persists,
replace the system
board.
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Defective keyboard/
mouse controller
(defective system
board)
Replace the system
board.
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Loose or improperly
connected keyboard
cable connector,
defective keyboard,
or defective
keyboard/mouse
controller (defective
system board)
Check the keyboard
cable connection.
Replace the keyboard. If
the problem persists,
replace the system
board.
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