Broadcom Corporation BRCM1048 Manuel D’Utilisation

If you do not find your problem here, see Chapter 2. The following section only describes problems 
that might negate the need to refer to the more comprehensive information in Chapter 2.

When I turn on the computer, 
nothing appears on the screen.

If the screen is blank, make sure that:
- The AC adapter is connected to the computer and the power cord 

is plugged into a working electrical outlet.

- The computer power is on. (Press the power button again for 

confirmation.)

- The memory is installed correctly. 

If these items are properly set, and the screen remains blank, have 
the computer serviced. 

When I turn on the computer, only a 
white cursor appears on a blank 
screen. 

Restore backed-up files to your Windows environment or the entire 
contents of your hard disk to the original factory contents using 
OneKey Recovery. If you still see only the cursor on the screen, have 
the computer serviced.

My screen goes blank while the 
computer is on.

Your screen saver or power management may be enabled. Do one of 
the following to exit from the screen saver or to resume from sleep or 
hibernation mode:
- Touch the touchpad.
- Press any key on the keyboard.
- Press the power button.

Press Fn+F2 to confirm whether the LCD screen has been turned off.

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 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.