Lenovo IdeaPad U455 - Manual (Page 61)

Chapter 5. Troubleshooting
47
A Password problem
I forgot my password. • If you forget your user password, you must take
your computer to a Lenovo authorized servicer or a
marketing representative to have the password
changed.
• If you forget your HDD password, a Lenovo
authorized servicer cannot 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 administrator password, a 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.
Keyboard problems
A number appears when
you enter a letter. • The numeric lock function is on. To disable it, press
Fn + F8
.
Sleep or hibernation problems
The computer enters sleep
mode unexpectedly. • If the processor overheats, the computer automatically
enters sleep mode to allow the computer to cool and to
protect the processor and other internal components.
Check the settings for sleep mode.