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#11
Hi ignatzatsonic,
My AppData folder is only approx. 27.5GB. So I don't think any culprit would be in the AppData folder seeing as there is some unknown file/s taking up 481GB.
Also, to answer your other question, I do not currently have any restore points, as I have recently cleared them all thinking this was the initial problem, which it did not turn out to be. I also have 0 bytes allocated for system restore points. I hope this answer was in relation to your question.
I have also already previously cleared my temp folder. It currently 22MB in file size.
I am not using any back up programs. To back up my files, I copy my whole user to an external hard drive once a week. Usually takes about an hour which works fine for me.
I am going to try an Error-checking scan overnight on the Local Disk C and see if I have any luck with that (Computer > Local Disk C > Right Click > Properties > Tools (tab) > Error-checking).