IBM ThinkPad X20 Supplementary Manual page 30

Solving computer problems
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
is attached when the computer resumes, the computer display remains blank
and output is not displayed. This restriction does not depend on the
resolution value. Press Fn+F7 to bring up the computer display.
Problem: The computer does not return from standby mode, or the standby
indicator stays on and the computer does not work.
Solution: The computer automatically enters standby or hibernation mode
when the battery is depleted. Connect the ac adapter to the computer; then
press Fn.
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 98 or Windows NT
Solution:
For Windows 98:
The generic CD-ROM or DVD-ROM driver for Windows 98 accesses the
internal CD-ROM or DVD-ROM drive every 3 seconds to see whether a
CD-ROM is inserted there. This prevents your computer from entering
standby mode even after a timeout. To enable the computer to enter standby
mode, do the following:
1. Click Start.
2. Move the cursor to Settings and Control Panel.
3. Click Control Panel, and then double-click System.
4. Click the Device Manager tab.
5. Click the + mark of CD-ROM.
6. Double-click the name of the CD-ROM or DVD-ROM.
7. Click the Settings tab.
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ThinkPad X Series Service and Troubleshooting Guide
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