I have a friend in my gaming group whose tower has experienced several crashes occasionally. It's where his computer slowly freezes up, kind of one program at a time. He says, "Something's unstable in my computer." I offered to post this for him so hopefully some answers can be found. You guys did a great job last time, it's the first place I thought of.
What happened in this particular incident is that his computer crashed at about 3:15 EST, and when he turned it back on, he thought nothing of it till he plugged in his gaming headset, (a Coolermaster Storm Sirus), and found only the Mic worked. Sometimes he heard feedback if he wiggled the place where the sound line hooked up to the computer, so he's sure the headset is just fine. He tried re-installing the drivers for sound, but nothing came of it.
I am going to have him post MiniToolBox and Speccy logs here soon so hopefully we can get this figured out.
PC Overview: https://app.box.com/s/actbkln6khqig5mp3new