Lenovo ThinkPad A21e English - A21e(2655) Service and Troubleshooting Guide - Page 26

TrackPoint problems, Device Manager

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Solving computer problems If these items are correct, have the computer serviced. Problem: The critical low-battery error message appears, and the computer immediately turns off. Solution: The battery power is getting low. Connect the ac adapter to the computer, or replace the battery pack with a fully charged one. Problem: The computer display remains blank after you take action to return from a sleep mode. 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. Do one of the following: v Replace the battery with a fully charged one and then press Fn. v 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. In the Control Panel, double-click the System icon. 2. Click the Device Manager tab. 3. Double-click Network Adapter. 4. Double-click Intel EtherExpress PRO PCI Adapter. 5. Select the Disable in this hardware profile check box. 6. Click OK. 7. Close all windows. 8. Restart the computer. 18 ThinkPad® A21e Service and Troubleshooting Guide

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If these items are correct, have the computer serviced.
Problem:
The
critical low-battery error
message appears, and the
computer immediately turns off.
Solution:
The battery power is getting low. Connect the ac adapter to the
computer, or replace the battery pack with a fully charged one.
Problem:
The computer display remains blank after you take action to return
from a sleep mode.
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. Do one of the following:
v
Replace the battery with a fully charged one and then press
Fn
.
v
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.
In the
Control Panel
, double-click the
System
icon.
2.
Click the
Device Manager
tab.
3.
Double-click
Network Adapter
.
4.
Double-click
Intel EtherExpress PRO PCI Adapter
.
5.
Select the
Disable in this hardware profile
check box.
6.
Click
OK
.
7.
Close all windows.
8.
Restart the computer.
Solving computer problems
18
ThinkPad
®
A21e Service and Troubleshooting Guide