was just playing ut2k4, blue screen and freeze so i rebooted and went to piss, came back and it was on the windows desktop but with purple vertical lines alternating on the screen. i flipped out and shut down and let it sit for a few moments then restarted it and they're gone. is that caused by my overclocking my video card? my RAM is shitty so a blue screen is almost expected every time i game. also, every time i turn on my computer my bios doesn't read the HSFan as being installed and on, yet every in-windows utility reads it as on and spinning.