Password Problems; Sleep Or Hibernation Problems - Lenovo G770 10372 User Manual

Chapter 5. Troubleshooting

Password problems

I forgot my password.

Sleep or hibernation problems

The critical low-battery error
message appears, and the
computer immediately turns off.
The computer enters sleep
mode immediately after Power-
on self-test (POST).
Note:If the battery is charged and the temperature is within range, have the computer serviced.
The computer does not return
from sleep mode and the com-
puter does not work.
Note: If the system still does not return from sleep mode, your system has stopped responding, and
you cannot turn off the computer; reset the computer. Unsaved data may be lost. To reset the
computer, press and hold the power button for 4 seconds or more. If the computer is still not
reset, remove the AC adapter and the battery.
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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 supervisor 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.
• The battery power is getting low. Connect the AC adapter to
the computer, or replace the battery with a fully charged
one.
• 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.
• If the computer does not return from sleep mode, it may
have entered hibernation mode automatically because the
battery is depleted. Check the power indicator.
If your computer is in sleep mode, connect the AC adapter
•
to the computer, then press any key or the power button.
If your computer is in hibernation mode or power-off state,
•
connect the AC adapter to the computer, then press the
power button to resume operation.