Problems With Drives And Other Storage Devices - Lenovo B490 User Manual

• Press Fn+F2 to confirm whether the LCD screen has been turned off.
If the problem persist, follow the solution to "The screen is unreadable or distorted." on page 49
The screen is unreadable or distorted.
Make sure that:
• The display device driver is installed correctly.
• The screen resolution and color quality are correctly set.
• The monitor type is correct.
Incorrect characters are displayed on the screen.
Did you install the operating system or application program correctly? If they are installed and configured
correctly, have the computer serviced.
When I turn on the computer, nothing is displayed on the screen and the computer does not beep
while starting up.
Make sure that:
• The battery is installed correctly.
• The ac power adapter is connected to the computer and the power cord is plugged into a working
electrical outlet.
• The computer is turned on. (Press the power button again for confirmation.)
If these items are correctly set, and the screen remains blank, have the computer serviced.
When I turn on the computer, only a white cursor is displayed on a blank screen.
Restore backed-up files to your Windows environment or the entire contents of your hard disk drive to
the original factory contents using the preinstalled recovery programs on your computer. If the problem
persists, 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 touch pad.
• Press the Fn key on the keyboard.
• Press the power button.
• Press Fn+F2 to confirm whether the LCD screen has been turned off.

Problems with drives and other storage devices

This section includes hard disk drive problems and optical drive problems.
Hard disk drive problems
Print these instructions now and keep it with your computer for reference later.
The hard disk drive makes a rattling noise intermittently.
The rattling noise might be heard:
• When the hard disk drive begins or finishes getting access to data.
• When you carry the hard disk drive.
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Chapter 9 Troubleshooting computer problems