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Lenovo K4450 Manual

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Chapter 7. Troubleshooting computer problems 31
When I turn on the computer, nothing is displayed on the screen and the computer does not beep
while starting up.
Ensure 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.
• Press the power button again to ensure that the computer is turned on.
If the problem persists, contact your local Service Provider.
When I turn on the computer, only a white cursor is displayed on a blank screen.
Restore back-up files, or restore the entire contents of your hard disk drive to the original factory contents
using the recovery programs provided on your computer.
If the problem persists, contact your local Service Provider.
My screen goes blank while the computer is on.
Your screen saver or power management might 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 check whether the LCD screen has been turned off.
Problems with drives and other storage devices
This topic provides instructions on troubleshooting problems with drives and other storage devices.
Hard disk drive problems
Print these instructions first.
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.
• You carry the hard disk drive.
• You carry your computer.
This is a normal characteristic of a hard disk drive and can be ignored.
The hard disk drive does not work.
Enter the BIOS program. Select Startup → Boot. Ensure that the hard disk drive is on the Boot priority order
list. If it is on the Excluded from boot order list, this indicates that it has been disabled. Select the entry for the
hard disk drive on the Excluded from boot order list and press Shift+1 to move it to the Boot priority order
list.
Optical drive problems
Print these instructions first.
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