Computer Screen Problems - Lenovo ThinkPad G40 Series Service And Troubleshooting Manual

Problem:
Under Windows XP, the Fn+F3 key combination does not make the
computer screen go blank.
Solution:
Windows XP enables multiple users to log on to the system at the same
time. If you are the first user to have logged on to your computer, you can
use the Fn+F3 key combination. Otherwise the combination will not work
on your computer.

Computer screen problems

Problem: The screen is blank.
Solution:
v If the standby status indicator is on (is green), press Fn to resume from the
standby mode.
v If you are using the ac adapter, or using the battery, and the battery status
indicator is on (is green), press Fn+Home to make the screen brighter.
v Press Fn+F7 to bring up the image.
Note: If you use the Fn+F7 key combination to apply a presentation
scheme, press Fn+F7 at least three times in three seconds, and the
image is displayed on the computer screen.
v If the problem persists, do the "Solution" in the problem below.
Problem: The screen is unreadable or distorted.
Solution: Make sure that:
v The display device driver is installed correctly.
v The display resolution and color depth are correctly set.
v The monitor type is correct.
To check these settings, do as follows:
For Windows XP:
1. Click Start.
2. Click Control Panel.
3. Click Appearance and Themes in the Pick a category section.
4. Click Display in the Pick a Control Panel icon section.
5. Click the Settings tab.
6. Check if the Screen resolution and Color quality are correctly set.
7. Click Advanced.
8. Click the Adapter tab.
Solving computer problems
Chapter 2. Solving computer problems
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