A Power Switch Problem; Keyboard Problems - Lenovo ThinkPad R51 2888 Supplementary Manual

Solution:
If you forgot your power-on password, you must take your computer to a
Lenovo authorized servicer or a marketing representative to have the
password canceled.
If you forgot your hard disk password, Lenovo authorized servicer can not
reset your password or recover data from the hard disk. You must take
your computer to a Lenovo authorized servicer or a 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, Lenovo can not reset your
password. You must take your computer to a Lenovo authorized servicer
or a 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 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.
Problem:
All or some of the keys on the external numeric keypad do not work.
Solution:
Make sure that the external numeric keypad is correctly connected to the
computer.
Solving computer problems
Chapter 2. Solving computer problems
17