I have the same mobo.
Similar issues. Screen gets distorted and freezes. In windows 7 startup, it freezes before the 4 color animation logo dots come in so it just says "starting windows." There's also been tons of weird errors like program names missing and dll files being damaged or corrupted. Also bios screen freezes and the reboots after post that you mentioned. This particular mobo has this issue. I am still working on fixing mine.