A Power Switch Problem; Keyboard Problems - IBM ThinkPad R50 Series Service And Troubleshooting Manual

If you forgot your hard disk password, IBM will not reset your password
or recover data from the hard disk. You must take your computer to an
IBM authorized servicer or an IBM marketing representative to have the
hard disk drive replaced. Proof of purchase is required, and a fee will be
charged for parts and service.
If you forgot your supervisor password, IBM will not reset your password.
You must take your computer to an IBM authorized servicer or IBM
marketing representative to have the system board replaced. Proof of
purchase is required, and a fee will be charged for parts and service.

A power switch problem

Problem:
The system does not respond, and you cannot turn off the computer.
Solution:
Turn off the computer by pressing and holding the power switch for 4
seconds or more. If the computer is still not reset, remove the ac adapter
and the battery.

Keyboard problems

Problem:
All or some of the keys on the keyboard do not work.
Solution:
If the problem occurred immediately after the computer returned from
standby mode, enter the power-on password if one has been set.
If an external keyboard is connected, the numeric keypad on your
computer does not work. Use the numeric keypad on the external
keyboard.
If an external numeric keypad or a mouse is connected:
1. Turn off the computer.
2. Remove the external numeric keypad or the mouse.
3. Turn on the computer and try using the keyboard again.
If the keyboard problem is resolved, carefully reconnect the external
numeric keypad, external keyboard, or mouse, making sure that you have
seated the connectors properly.
If keys on the keyboard still do not work, have the computer serviced.
Problem:
A number appears when you type a letter.
Solution
The numeric lock function is on. To disable it, press and hold Shift; then
press NumLk.
Solving computer problems
Chapter 2. Solving computer problems
19