To disable access to System Restore via the Start menu (Start > Programs > Accessories > System Tools > System Restore), use the following registry hack:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Policies\Microsoft\Windows NT\SystemRestore
Name: DisableSR
Type: REG_DWORD
Value: 1=enable restriction;0=disable
restriction
To disable access to System Restore via the Control panel (Control Panel > System > System Restore), use the following registry hack:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Policies\Microsoft\Windows NT\SystemRestore
Name: DisableConfig
Type: REG_DWORD
Value: 1=enable restriction;0=disable
restriction