Lenovo IdeaPad U510 Notebook - Manual (Page 30)

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Chapter 4. Troubleshooting
BIOS password problems
I forgot my password. • If you forget your user password, you must ask the
system administrator to reset your user password.
• If you forget your hard disk drive 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.
Sleep problems
The critical low-battery error
message appears, and the
computer immediately turns
off. • The battery power is getting low. Connect the AC
adapter to the computer.
The computer enters sleep
mode immediately after
Power-on self-test (POST). • Make sure that:
- The battery is charged.
- The operating temperature is within the acceptable
range. See “Chapter 2. Use and care Information” of
Lenovo Safety and General Information Guide.
Note: If the battery is charged and the temperature is within range, have the computer serviced.