This tutorial will show you how to delete the System Protection restore points in Windows 7.
Click Start >> Right click Computer >> and select Properties.
Click on the System Protection on the left side as shown.
Click on the hard disk partition, that you want to change System Protection settings.
Note: Windows 7 should be installed on the C drive by default. Mine is installed under a E: because I am running a Dual Boot system, so do not get confused
Click Configure as shown.
Click the Delete button as shown.
6. Click Continue to confirm.