Sorry if this has been asked. I searched and didn't find a similar question. Windows 7 Ultimate, BIOS mod activated. System restore hasn't worked since installing Windows 7. I did a clean install of 7 Home Premium, then Anytime Upgrade to Ultimate. When I noticed that system restore wasn't working I created a manual restore point. Today I was going to create another restore point after updating some device drivers and I noticed that the restore point I created last week is gone. System restore is turned on for drive C. Volume Shadow Copy service is on/automatic. The only disk cleaner I use is CCleaner and I don't think that would remove system restore points. Any suggestions?