I am running Windows Repair to fix a "system event notification service" problem. I am running Windows 7 and I got advice to uncheck all the repair boxes, then tick boxes 1, 10, 13, and 26. I think I got that from someone here, or at the tech guy forum. Anyway, I have done so, and I downloaded it and started the process late last night and it's still running and still on operation 1 of 4. I thought that it must be hanging up, but there still appears to be some CPU activity. I'm thinking it shouldn't be taking anywhere near this long and earlier I tried to shut it down so I could try running it again, but I got a warning message "access denied, shutting down could cause problems". Thoughts?