Laptop, so I'd rather not mess with the insides if it can be avoided S:

For awhile it wasn't freezing until a minute or two after I logged in, but now it either hangs on the Welcome screen, or if I try to boot in safe mode it hangs after loading "crcdisk.sys" every time without fail, so I assume the corrupted file is either that one or whatever file it tries to access after that. So I think I can get into all of those BIOS goodies without problems. I'm not 100% sure that the antivirus is the problem, but that's what most of my google searches turned up P: