1. Log in to a Windows XP with user account that has administrator credentials.
2. Click 'Start,' point to the 'All Programs' listing and then to 'Accessories.' Point to 'System Tools' and select 'System Restore.'

3. Select 'Restore My Computer To An Earlier Time' and click 'Next' to open the 'Select A Restore Point' window.
4. Select a restore point that was created before you began experiencing errors on Windows XP. Click the left arrow buttons to select an early point if you are unsure. Click 'Next.'
5. Click 'Next' in the 'Confirm Restore Point Selection' panel to begin the restore process. Your computer will restart and the utility will restore your computer to the operating condition of the restore point.