A troubleshooter is an automated tool that can find and automatically fix some problems with your computer.
Run the Hardware and Devices troubleshooter to diagnose and fix common problems with hardware and devices.
To run the Hardware and Devices troubleshooter in Windows 7, follow these steps:
In the search box, enter troubleshooter,
and then click Troubleshooting.
Under Hardware and Sound, click Configure a device.
To run the Hardware and Devices troubleshooter in Windows Vista and Windows XP, follow these steps:
Click this button:
Fix this problem
In the File Download dialog box, click Run, and then follow the steps in the wizard.