Modern Warfare 3 crashes the computer in the middle of game

This might be a really specific question, but I've searched online and found many solutions that don't work, so this is sort of my last resort before formatting my computer. This is my setup:

• Graphics card: EVGA SuperClocked GeForce GTX 570 HD (Running dual
  monitors)
• Memory: 8GB GSKILL Ripjaws X Series
• CPU: i5 2500k OC'd to 4.5
• MOBO: ASRock P67 EXTREME4

The game crashes only under 3 separate circumstances:

1. When I finish a match in multiplayer
2. When I finish a mission in single player
3. When I get on an AC-130 (be it single player or multiplayer)

And I'm running it in max settings. The really annoying thing that makes it hard to test is that it doesn't happen every time (AC130 does, but unfortunately I don't get it every time).

And by crash I mean fully crash, it doesn't send me to the desktop, both screens go blank and I have to turn off and back on the computer.

Any suggestion is extremely welcome, even if it's just a way to reproduce the problem every time would help me a lot for testing purposes.

Thanks!

EDIT:

I started a bounty. More details about the crash:

• It usually happens on explosions (cars, concussive, AC130 big gun) but it's not limited to that, sometimes it happens out of nowhere, other times when game starts or ends.
• I tried without overclocking and it didn't work
• I tried it with the game's "Safe Mode" and it crashed too (not that safe I guess)
• Updated my mother board's audio drivers and have latest video card drivers
• Crash happens roughly once every hour
• Screen goes blank and I can still hear half a second of the last sound in the game being repeated over and over (an exaggerated example of this is if the guy said "Target down" I will hear "down,down,down,down,down,down" until I restart my computer, without exagerating I would probably hear "n,n,n,n,n,n,n,n,n,n,n,n,n,n,n,n,n,n")
• Video card fan speeds up like crazy and gets really noisy
• The temperature of my video card is usually around 80 degrees, but that's with every game so I don't think heating is the problem
• I have two monitors. I disabled on of them and it didn't fix the problem
• I turned off antialiasing and some other effects in the advanced video settings, and I still go the crash
• Erased MW3, re-downloaded and re-installed it, and it crashed on the first game I tried
• Took out my CPU overclocking and it still crashed
• Video card is overclocked by manufacturer see here
• Crash is not logged in the Windows' Event Viewer
• I'm not 100% sure, but I sort of remember the problem started after some Windows update, after that Windows update Skype also started acting up (as soon as I picked up a phone call, Skype would crash, I had to download the next version's beta to get rid of that problem)
• Steam overlay is disabled, and it still crashes

I'll post more details as I remember them.

Also these are some of the games I usually play or have played, and I have had no problems with them:

• Starcraft 2
• Skyrim
• Call of Duty 4
• Call of Duty MW2
• Borderlands
• Left 4 Dead 2
• Payday
• The Witcher 2
• Civilization V
• Batman Arkam Asylum (Although this one drops frame rate drastically only on boss battles, weird too. It doesn't crash though)
• Counter Strike Source
• Portal
• Portal 2
• Half-Life 2
• Deus Ex Human Revolution
• Among others

Thanks!

More news:

By changing the game's sound from "Windows Default" to "Stereo" I was able to reduce the occurrence of this problem to once every 3 to 5 hours, however, the problem persists. If is a clue to anyone, your advice is really appreciated. Thanks.

It just crashed again a few minutes ago according to the log, at 8:05pm and this is the only info I get in the event viewer:

The ones above it say (from bottom to top):

• Unable to produce a minidump file from the full dump file.
• The computer has rebooted from a bugcheck. The bugcheck was: 0x00000116 (0xfffffa800addb4e0, 0xfffff8800fa0afa4, 0xffffffffc000009a, 0x0000000000000004). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: .
• (Critical)The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
• Audit events have been dropped by the transport. 0

EDIT:

So the bounty is about to end, and I didn't get any conclusive solution. I will keep trying to fix this, and will post my solution once I'm find the solution. I hope this helps anyone have the same problem.

Thanks for everyone's time, you guys have been really helpful, I will let you all know when this is fixed.

EDIT – FINAL UPDATE

It was a strange form overheating. I call it strange because it crashes soon after it gets to 80 degrees, but I've played other games (Startcraft 2 for example) at around 86 degrees without problems, which is why I disregarded this possibility right away. Lately I've been setting the GPU fan to spin as fast as it can using MSI Afterburner, and I haven't had any crash since. I was able to set back the audio to Dolby 5.1, put back the steam overlay and everything. So I can happily play now.

Thanks everyone for all your help, I learned a lot from this experience, and although the problem and solution were somewhat simple (except for the fact that other games run all right when the GPU is warmer) I hope it helps others having any issue addressed here.

Thanks again and happy gaming.