Lenovo IdeaPad Y400 User Guide - Page 31

Chapter 4. Troubleshooting Troubleshooting Display problems When I turn on the computer, nothing appears on the screen. • If the screen is blank, make sure that: - The battery is installed correctly. - 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 installed and configured correctly, have the computer serviced. When I turn on the computer, only a • Restore backed-up files to your Windows environment or the entire white cursor appears on a blank contents of your hard disk to the original factory contents using screen. 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 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. 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. 27