Hi, guys. Recently I upgraded my machine from Windows XP to Windows 7. Over the last 2 days, it has been crashing at random points (seems to be when it's idling, as when I come back it complains about an unexpected shutdown).
I don't know what's causing this, as when I have seen the bluescreen, it flashes past too fast, and I have no time to read the error description. I don't know whether this could help anyone, but I have the dump files on my desktop if anyone wants me to upload them.
Additionally: One time I was at the computer when this happened, I noticed that the audio suddenly dropped out with a strange popping sound from my headphones (the headphones are fine, I tested them elsewhere and they worked perfectly). Also, the computer suddenly became extremely slow, with the mouse cursor lagging across the screen. I happened to be playing a game at the time, although in the other occurrences I wasn't even at the computer. I have run a full scan with Malwarebytes Anti-Malware Free, so I don't think it is a virus on my machine.