Lenovo ThinkPad T23 46P4564 - English - Service and Troubleshooting Guide for - Page 31

Battery problems, standard charge time for your computer.

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Solving computer problems Solution: Did you install the operating system or application program correctly? If they are installed and configured correctly, have the computer serviced. 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: "Unable to create overlay window" message 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 1280x1024 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. If the battery cannot be fully charged in 24 hours, use a new battery. If the optional Quick Charger is available, use it to charge the over-discharged battery. Problem: Your computer shuts down before the battery status indicator shows empty, -or- Your computer operates after the battery status indicator shows empty. Chapter 2. Solving computer problems 23

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Solution:
Did you install the operating system or application program
correctly? If they are installed and configured correctly, have the computer
serviced.
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:
“Unable to create overlay window” message 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 1280x1024 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.
If the battery cannot be fully charged in 24 hours, use a new battery.
If the optional Quick Charger is available, use it to charge the over-discharged
battery.
Problem:
Your computer shuts down before the battery status indicator shows
empty,
-or-
Your computer operates after the battery status indicator shows
empty.
Solving computer problems
Chapter 2. Solving computer problems
23