user ownership

So I enter my password, PC's taking longer than usual, I hear the typical error sound. I'm suprised, my desktop wallpaper is gone, the icons on it are stacked rather than as I set them, the pinned buttons on taskbar are gone. The Start button won't respond, neither the toolbars. Then there comes...

Hi, new to this forum, looks interesting and looks like it might be a place to visit. My fresh install - Win 7 x 64 (after buying new SSD) which has been working well for a few years seems to be playing me up a bit. I wonder if anyone here has some knowledge that they could share so I can sleep...

So my story is this, since some time one time per month more or less with a normal use of the computer my Windows decides it's time to corrupt a folder/file, whatever, pretty sad indeed, what it also does is somehow disable my autochk.exe and my chkdsk.exe so that I can't fix this problem, but...