HP R4000, R4001XX, R4003XX, R4012US, R4025US, R4150EA, R4100 Flowchart 2.18-Nonfunctioning Keyboard

Troubleshooting

Flowchart 2.18—Nonfunctioning Keyboard

Keyboard

not operating

properly.

Connect notebook

to good external

keyboard.

	N
External		Replace
device		system
works?		board.

Y

Reseat internal

keyboard connector (if applicable).

N

Keyboard operating properly?

Y

Done

Replace internal

keyboard or

cable.

Y

Keyboard operating properly?

N

Replace

system

board.

Done

2–26 Maintenance and Service Guide