6. Click the Properties button. Check the ″Device status″ box and make
sure the device is working properly. If not, click the Troubleshooter
button.
7. Click the Monitor tab.
8. Make sure the information is correct.
9. Click the Properties button. Check the ″Device status″ box and make
sure the device is working properly. If not, click the Troubleshooter
button.
Problem:
The screen stays on even after you turn off your computer.
Solution:
Press and hold the power switch for 4 seconds or more to turn off your
computer; then turn it on again.
Problem:
Missing, discolored, or bright dots appear on the screen every time you
turn on your 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:
A message, “Unable to create overlay window,” appears when you try to
start DVD playback.
or
You
get poor or no playback while running video playback, DVD
playback, or game applications.
Solution
Do either of the following:
v If you are using 32-bit color mode, change the color depth to 16-bit
mode.
v If you are using a desktop size of 1280×1024 or larger, reduce the
desktop size and the color depth.
Battery problems
Problem:
The battery cannot be fully charged by the power-off method in the
standard charge time for your computer.
Solution:
The battery might be over-discharged. Do the following:
1. Turn off the computer.
2. Make sure that the over-discharged battery is in the computer.
3. Connect the ac adapter to the computer and let it charge.
Solving computer problems
24 ThinkPad
®
T40 Series Service and Troubleshooting Guide
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