• Go to Start 
• Right-click Computer icon and then select Properties 

• in the left part of the System window click System protection 

• in the System properties window go to the System protection tab 
• in the Automatic restore points window uncheck the system disk with Windows Vista installed 

• click the button Turn System Restore Off to confirm you do disable system restore. 

• click the OK button 

• reboot your PC

In order to disable system restore for OS's Windows Millenium and Windows XP, do the following (system restore Windows XP is a switch off example):

• Right-click My computer icon and then select Properties

• Go to System restore
• Tick Switch off system restore
• Press OK or Apply

• Confirm system restore in the window
• Restart your computer