Had been having persistent lockups, BSODs and trouble updating Windows and Malwarebytes over a couple of weeks on Windows 7 PC. For some reason, there were no Restore Points visible, so no help there. After eliminating the possibioity of virus or malware infection, with a lot of help from Patryk at Malwarebytes, i installed the Pro version of Windows Repair and after running it in Safe Mode a couple of times, all seems to be running smoothly, updates are working and Windows Restore Points are being created normally.
Great program - keep up the good work!