IBM ThinkPad T40, Service And Troubleshooting Manual

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Problem:
Your computer does not enter standby or hibernation mode.
Solution:
Check whether any option has been selected that would disable your
computer from entering standby or hibernation mode.
Problem:
The computer does not enter standby mode as set by the timer under
Windows NT
®
.
Solution:
For Windows NT:
If you enable the CD-ROM AutoRun feature, the timer cannot trigger the
computer to enter standby mode. To enable the timer, disable the AutoRun
feature by editing the configuration information in the registry as follows:
HKEY_LOCAL_MACHINE\SYSTEM\
CurrentControlSet\Services\Cdrom\
Autorun: 0x1 > Autorun: 0
Note: Before you make any changes, back up the computer registry and
configuration. If something goes wrong, you can restore the system
registry and configuration files.
Problem:
The system does not wake up at the time set on the timer, if the computer
is not connected to an ac power source, -or- The system does not enter
hibernation mode from suspend mode, if the computer is not connected to
an ac power source.
Solution:
The timer-wake-with-battery-operation is disabled by default. If you
enable this function, the computer could wake up and begin running
while it is being carried; this could lead to damage to the hard disk drive.
With this risk in mind, you can enable the timer-wake-with-battery-
operation.
1. Turn your computer off and then on again; then, while the message,
“To interrupt normal startup, press the blue Access IBM button” is
displayed at the lower left of the screen, press the Access IBM button.
IBM Rescue and Recovery screen opens.
2.
Click Access BIOS . The System Restart Required window is displayed.
3.
Click
Yes
. The computer restarts, and the IBM BIOS Setup Utility menu
appears.
4.
With the cursor key, select Config ; then press Enter. The Power
submenu is displayed.
5.
Select Timer Wake with Battery Operation by pressing Enter.
Solving computer problems
Chapter 2. Solving computer problems
21