Lenovo ThinkPad T23 46P4564 - English - Service and Troubleshooting Guide for - Page 26

Standby or hibernation problems - service manual

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Solving computer problems Note: For more information, see the manual supplied with the mouse. Problem: The mouse buttons do not work. Solution: Change the mouse driver to Standard PS/2 Port Mouse, and then reinstall IBM PS/2 TrackPoint. Drivers are provided in the C:\IBMTOOLS\DRIVERS directory on your hard disk drive. If your hard disk drive does not contain device drivers, refer to the ThinkPad Service & Support Web site. To access this Web site, open Access ThinkPad by pressing the ThinkPad button, then click the Service & Support image on the right of the screen. Problem: The scrolling or magnifying glass function does not work. Solution: Check the mouse driver in Device Manager window, and make sure that the IBM PS/2 TrackPoint driver is installed. Standby or hibernation problems Problem: The computer enters standby mode automatically. Solution: If the processor reaches a temperature that is too high, the computer automatically enters standby mode to allow the computer to cool and to protect the processor and other internal components. Problem: The computer enters standby mode immediately after Power-On Selftest (POST) (the standby indicator light turns on). Solution: Make sure that: v The battery is charged. v The operating temperature is within the acceptable range. Refer to "Specifications" in this Guide. If these items are correct, have the computer serviced. Problem: The critical low-battery error message is displayed, and the computer immediately turns off. Solution: The battery power is getting low. Connect the ac adapter to the computer, or replace the battery with a fully charged one. Problem: When you take action to return from standby mode, the computer display remains blank. Solution: Check whether an external monitor was disconnected while the computer was in standby mode. Do not disconnect the external monitor while the computer is in standby mode or hibernation mode. If no external monitor 18 ThinkPad® T23 Service and Troubleshooting Guide

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Note:
For more information, see the manual supplied with the mouse.
Problem:
The mouse buttons do not work.
Solution:
Change the mouse driver to
Standard PS/2 Port Mouse
, and then
reinstall
IBM PS/2 TrackPoint
. Drivers are provided in the
C:\IBMTOOLS\DRIVERS directory on your hard disk drive. If your hard disk
drive does not contain device drivers, refer to the ThinkPad Service &
Support Web site. To access this Web site, openAccess ThinkPad by pressing
the ThinkPad button, then click the Service & Support image on the right of
the screen.
Problem:
The scrolling or magnifying glass function does not work.
Solution:
Check the mouse driver in Device Manager window, and make sure
that the
IBM PS/2 TrackPoint
driver is installed.
Standby or hibernation problems
Problem:
The computer enters standby mode automatically.
Solution:
If the processor reaches a temperature that is too high, the computer
automatically enters standby mode to allow the computer to cool and to
protect the processor and other internal components.
Problem:
The computer enters standby mode immediately after Power-On
Selftest (POST) (the standby indicator light turns on).
Solution:
Make sure that:
v
The battery is charged.
v
The operating temperature is within the acceptable range. Refer to
“Specifications” in this Guide.
If these items are correct, have the computer serviced.
Problem:
The
critical low-battery error
message is displayed, and the
computer immediately turns off.
Solution:
The battery power is getting low. Connect the ac adapter to the
computer, or replace the battery with a fully charged one.
Problem:
When you take action to return from standby mode, the computer
display remains blank.
Solution:
Check whether an external monitor was disconnected while the
computer was in standby mode. Do not disconnect the external monitor while
the computer is in standby mode or hibernation mode. If no external monitor
Solving computer problems
18
ThinkPad
®
T23 Service and Troubleshooting Guide