I'm wondering if anyone has run into this or has a suggestion. I had win8.1 bootcamp installed and working for like a year+. One day, I booted up Win.8.1 and was greeted by a looping BSOD "Kernel Security Check" Failure. I erased my partition and reinstalled windows, booted fine > installed Bootcamp.... bam looping BSOD "Kernel Security Check" Failure. erased and partitioned, installed windows again and it works. I can't install BootCamp. I've repeated erase and install multiple times, no luck. I've re-downloaded Bootcamp drivers a couple of times , no luck.. I reviewed the crash dumps trying to figure it out, but came up with nothing useful. I suspect a Windows update changed some security criteria, but I also can't find any other reports of similar. Any thoughts?