User Manual
Troubleshooting
Standby or hibernation problems
Problem Cause and action
The computer enters
standby mode imme-
diately after POST (the
standby indicator is on).
Make sure that:
The battery is charged.
The ac adapter is connected to the computer.
The operating temperature is within the acceptable range. Refer to “Features”
on page 2.
If these items are correct, have the computer serviced.
A message "critical low-
battery error" appears,
and the computer imme-
diately turns off.
The battery power is getting low. Connect the ac adapter to the computer, or
replace the battery with a fully charged one.
When you take action to
return from standby
mode, the computer
display remains blank.
Check if an external monitor was connected before the computer entered standby
mode. Do not disconnect the external monitor while the computer is in
hibernation mode. If no external monitor is attached when the computer
resumes, the LCD remains blank and output is not displayed. This
restriction does not depend on the resolution value.
The computer does not
return from standby
mode, or the standby
indicator stays on and
the computer does not
work.
The computer automatically enters standby or hibernation mode when the battery
power is exhausted. Do one of the following:
1. Connect the ac adapter to the computer.
2. Replace the battery with a fully charged one; then press Fn.
Your computer does not
enter standby or
hibernation mode.
Check if the standby or hibernation options are set in the Power Management
Properties window (Fn+F2).
Make sure the hibernation file is created. (See
Online User's Guide
for more
details.)
Note: If a communication program is running, you cannot enter hibernation
mode. To enter hibernation mode, stop the communication program, and
then remove the PC Card or turn off power to the PC Card slot using the
Control Panel.
24 ThinkPad i Series 1200/1300 User's Reference