IBM ThinkPad T22 2647 Supplementary Manual page 27

Solving computer problems
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.
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: When you are using the port replicator, resuming normal operation
from hibernation or standby mode takes a long time.
Solution: If the Ethernet port is enabled, but the port replicator is not
connected to a network, resuming operation can take a long time. The
computer queries the Ethernet until the timeout timer stops the query. If you
want to access an Ethernet, connect the network cable. If you are not using
the network, disable the Ethernet port as follows:
For Windows 98:
1. Double-click the System icon in the Control Panel.
2. Click the Device Manager tab.
3. Double-click Network Adapter.
4. Double-click Intel EtherExpress PRO PCI Adapter.
5. Mark the Disable in this hardware profile check box.
6. Click OK.
7. Close all windows.
8. Restart the computer.
For Windows NT:
1. Double-click the System icon in the Control Panel.
2. Select Intel EtherExpress PRO Adapter, and click Startup...
3. Select Disabled.
4. Click OK.
5. Click Close.
6. Close all windows.
7. Restart the computer.
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Chapter 2. Solving computer problems