Yes, I will probably have to go through 1 by 1, The trouble is that it takes so much time once it hangs and I have to do a restore point. Yes, I can boot the PC in safe mode after a hang. I have tried installing from safe mode but it still hangs on normal boot. Thanks for your help. I will post if I find anything out. BTW I have Classic Shell running on other Win 10 machines and it does not cause a problem. On another note, the second machine must have been a minor glitch as I was able to get it to boot after the update. I am trying to get out of town for the Spring break so I will be putting this on hold til later.