Travel back in time to previous configuration settings with the System Restore feature in Windows XP by following these steps:
Step 1: Click Start, select All Programs, select Accessories, select System Tools, and then click System Restore. At the Welcome to System Restore screen appears, click Create a restore point, and then click Next.
Step 2: In the Restore point description text box, type a name that will be used to identify the restore point. At the Restore Point Created screen, click the Home button to return to the Welcome screen.
Step 3: At the Welcome to System Restore screen, click the Restore my computer to a earlier time radio button, and then click Next.
Step 4: At the Select a Restore Point screen, click on the various bolded dates in the calendar to view the restore points available on your computer, as well as why they were created. Click on today’s date to select the restore point created in the previous steps, and then click Next.
Step 5: At the Confirm Restore Point Selection screen, read the information provided, and then click Next to perform the restore. The progress of the restore operation will be visible on the screen, and then Windows XP will reboot automatically.
Step 6: Once Windows XP has rebooted, the Restoration Complete window will appear. Click OK to return to Windows.
Tip: Create a new system restore point manually prior to installing any new software or drivers in order to ensure that your previous system settings are available should any problems occur.