go to windows help & type restore to factory defaults; here is what I found.
Restore system files and settings
System Restore helps you restore your computer's system files to an earlier point in time. Typically, you want to restore your computer to a restore point that was created just before the date and time when you started noticing problems. The descriptions of the restore points that are created automatically correspond with the name of an event, such as Windows
Update installing an update. System Restore returns your computer to the state that it was in before the restore point that you choose. To learn more about how System Restore works, see What is System Restore?
To restore system files and settings using a recommended restore point
- If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
- Click Recommended restore, and then click Next.
If there isn't a recommended restore point, follow the steps below to choose a specific restore point.
- Review the restore point, and then click Finish.
To restore system files and settings using a specific restore point
- Do one of the following:
If there is a recommended restore point, click Choose a different restore point, and then click Next.
If there isn't a recommended restore point, click Next.
Click the restore point that you want, and then click Next.
To view the programs and drivers that will be affected (which could include programs that will be deleted), click Scan for affected programs.
Review the resto