This just happened; scared the s::t out of me. I was playing a game when my screen froze, audio glitched out, and then screen turned red. I think this may be my WD MyBook drive that I pried out of a portable HDD from before I was born, as it has been making grinding/buzzing noises recently and my Steam install is there. I'm switching Steam install to C drive and removing the drive, but is this enough? Thanks.