god i hate the blue screen! Yours sounds like it is hardware related but I too was getting the blue screen a few days ago
I have anti virus installed but i picked up a virus the other day that was caught quick but not quick enough not to be installed in key parts of my operating system. After it was fully removed i sensed that some of it was still left behind of effecting my machine so i started backing up my shit to my external. Well that is where the fun came in. If i tried moving large or many files at once it would blue screen everytime so i hat to move no more then 2 folders at once to be able to keep from getting the blue screen.. I reformatted and it's running fine
but on another note I just ordered a new laptop last night to get something faster so I can't wait for tue or wed