Computer Screen Problems - Lenovo ThinkPad E485 User Manual
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Also See for ThinkPad E485:
- Hardware maintenance manual (102 pages) ,
- Setup manual (8 pages) ,
- Setup manual (6 pages)
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If the problem persists, ensure that the correct device driver is installed by doing the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or
Small icons.
2. Click Keyboard.
3. Click the Hardware tab. In the Device Properties section, ensure that you see this message: Device
Status: This device is working properly.
If keys on the keyboard still do not work, have the computer serviced.
• Problem: All or some keys on the external numeric keypad do not work.
Solution: Ensure that the external numeric keypad is correctly connected to the computer.
• Problem: The keys on the top row of the numeric keypad might not function the same as the icon printed
on each key.
Solution: Do the following:
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or
Small icons.
2. Click Keyboard. In the Keyboard Properties window, click the Fn and function keys tab.
Note: If the Fn and function keys tab is not displayed, connect your computer to the Internet. Then
download and install the ThinkPad Hotkey Features program from the Lenovo Support Web site. For
more information, see "Installing device drivers" on page 44.
3. In the How to use Fn key combinations section, select your preferred option.
4. If you select Fn sticky method, press Fn to reset the Fn sticky status.
5. Try to press keys on the top row of the numeric keypad again to check if the problem is resolved.
Computer screen problems
• Problem: My screen keeps blanking when I do not want it to.
Solution: Do the following:
1. Go to Control Panel, and ensure that you view Control Panel by Category.
2. Click Hardware and Sound ➙ Power Options.
3. Show the additional plans, and then select High performance.
• Problem: When I turn on the computer, nothing is displayed on the screen and the computer does not
beep while starting up.
Note: If you are not sure whether you heard any beeps, turn off the computer by pressing and holding the
power button for four seconds or more. Then turn on the computer and listen again.
Solution: Ensure that:
– 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.)
– The brightness level of the screen is appropriately set.
If a power-on password is set, press any key to display the prompt for the power-on password and then
type the correct password and press Enter.
If these items are correctly set, and the screen remains blank, have the computer serviced.
• Problem: When I turn on the computer, only a white cursor is displayed on a blank screen.
Solution: If you have modified a partition on your hard disk drive by using partition software, information
about that partition, or the master boot record might have been destroyed.
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E480, E485, and R480 User Guide
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Troubleshooting
