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 “Diagnosing problems” on page 131 and run a diagnostic test of the USB connector.

Chapter 10. Troubleshooting computer problems 157

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Lenovo E420, E520, 114155U manual Troubleshooting computer problems