Software Problems; Ports And Connectors; Universal Serial Bus Problems; A Docking Station Or Port Replicator Problem - Lenovo ThinkPad T420 User Manual

Software problems

• Problem: An application does not run correctly.
Solution: Make sure that the problem is not being caused by the application.
Check that your computer has the minimum required memory to run the application. Refer to the manuals
supplied with the application.
Check the following:
– The application is designed to operate with your operating system.
– Other applications run correctly on your computer.
– The necessary device drivers are installed.
– The application works when it is run on some other computer.
If an error message appears while you are using the application program, refer to the manuals supplied
with the application.
If the application still does not run correctly, contact your place of purchase or a service representative for
help.

Ports and connectors

This section includes the most common ports and connectors problems: Universal Serial Bus, and docking
station or port replication.

Universal Serial Bus problems

• Problem: A device connected to the USB connector does not work.
Solution: Open the Device Manager window. Make sure that the USB device setup is correct, and that
the assignment of computer resource and the installation of the device driver are correct.
For Windows 7 and Windows Vista:
1. Click Start ➙ Control Panel.
2. Click Hardware and Sound.
3. Click Device Manager. If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
For Windows XP:
1. Click Start ➙ Control Panel.
2. Click Performance and Maintenance, and click System.
3. Click the Hardware tab, and click the Device Manager button.
Refer to "Using Lenovo ThinkVantage Toolbox" on page 203 and run Lenovo ThinkVantage Toolbox for a
diagnostic test of the USB connector.

A docking station or port replicator problem

• Problem: The computer does not start when you try to turn it on, and does not respond when you try
to resume operation.
Solution: Make sure that:
– The ac power adapter is connected to the docking station or the port replicator.
– The docking indicator of the ThinkPad Mini Dock Plus Series 3, the ThinkPad Mini Dock Series 3, or the
ThinkPad Mini Dock Plus Series 3 (170 W) is on.
– The computer is securely attached to the docking station or the port replicator.
.
Chapter 10 Troubleshooting computer problems
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