Computer Screen Problems - Lenovo ThinkPad T400 Service And Troubleshooting Manual

Computer screen problems

Problem:
Incorrect characters appear on the screen.
Solution:
1. Make sure that the operating system and the application program are
2. If they are installed and configured correctly, have the computer serviced.
Problem:
Missing, discolored, or bright dots appear on the screen every time I turn on
my computer.
Solution:
This is an intrinsic characteristic of the TFT technology. Your computer's
display contains multiple thin-film transistors (TFTs). A small number of
missing, discolored, or bright dots on the screen might exist all the time.
Problem:
The screen is blank.
Solution:
1. Do the following:
2. If the problem persists, do the Solution in the following Problem.
installed correctly.
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.
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 If the sleep (standby) status indicator is on (is green), press Fn to
resume from the sleep (standby) mode.
Chapter 3. Solving computer problems
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