A Power Switch Problem; A Keyboard Problem; A Pointing Device Problem; Standby Or Hibernation Problems - Lenovo 3000 C100 0761 Supplementary Manual

Solving computer problems
Solution

A power switch problem

Problem:
The system does not respond, and you cannot turn off the computer.
Solution:

A keyboard problem

Problem:
A number appears when you type a letter.
Solution

A pointing device problem

Problem:
The mouse or the pointing device does not work.
Solution:

Standby or hibernation problems

Problem:
The computer enters standby mode unexpectedly.
14
Lenovo 3000 C100 Service and Troubleshooting Guide
→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 HDD 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 forget your supervisor password, Lenovo authorized servicer
cannot 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.
→ 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.
→ The numeric lock function is on. To disable it, press and hold Fn;
then press NmLk.
→Make sure that the mouse or pointing-device cable is securely
connected to the USB port.
Note: For more information, see the manual supplied with the mouse
or pointing-device.