Last Monday, after I'd been away for ten days or so, the second time I logged on to the PC (Widows 7 Ultimate, I'm the administrator) I got the error message about not being able to find my profile, and despite several restarts it wouldn't let me log on, though I could get on as another user. So via her account I found a helpful youtube which told me to start in safe mode, get into regedit, change a couple of file names, set a couple of numbers back to zero - and it worked. This afternoon I got the same error message, but restarted the PC and got in ok. (Phew) Is there anything I should be looking for which could be creating this fault? I have had a couple of failed Adobe updates recently - could it be them? My auto backups are set to Sunday evening, so it shouldn't be anything to do with them. Please don't get too technical - my regedit was way out of my comfort zone!