I hope this is the right place to post this. Also i might have posted this earlier but i can't find it now so I’m trying again
Ok so yesterday i picked up a copy of crysis 3 installed it and played around for a little while. About an hour or so in the game randomly closes and an error message flashes across my screen stating that the system is overheating, just everything goes black.  Turns out the fans on my radiator (CPU duel 580 loop) weren't blowing.  I reconnected them and turned my computer back on.  I was confronted with only one of my monitors responding (not the default monitor either) and it was in low res.  Then windows told me it was installing new hardware and that the install of the 580 failed, and some other nvidia stuff installed fine.  I say w/e to myself then turn it off cause i got to go somewhere.  I come back a little later and power on the rig, only to be greeted by some error beeps and lights coming on, then the post sound but nothing else happened.  I held the switch after a while of nothing.  Turned it back on and now the CPU error led comes on at the same time as everything starts spinning.  I've had a problem in the past with my psu so i tried a different one but the same thing happens.  I have the board out right now with just one stick of ram and the CPU on it to troubleshoot.  Going to test the CPU on another mobo ASAP but in the meantime does anyone have any ideas? Thanks your any and all help
 
 

It's hard to cook a CPU enough to damage it, and it shuts down anyway beyond a certain temp. I'd be worried about your GPU instead as those run hotter than the processor, don't have the same failsafes, and the power circuitry on the card is easily damaged when it gets too hot. Since you were gaming for an hour... well, that's not good at all.  
 
Especially since Windows was attempting to install software for it, that's a red flag. I'd suggest you swap your GPU and see if the system works.

Well here's the damage. The CPU did die, won't post in any board I’ve found, and one of the 580s the top one (if that makes a diff) fried as well.  rept the CPU with a 3rd gen and I can get by with just the single 580 so not a total loss and only suffered a 2 day down period. 
And btw the 2600k always ran hotter than the cards did. With the full blocks the cards never hit more than 70 while the CPU still ran close to 90-95 when folding and was at least as hot as the cards in game.  I’m going to see if there is anything left I can do to get them back running but at least I’m running. 
Also would anyone recommend or discourage a re-flow of the 580? If yes then any preferred method? 
 
Also my new 3rd gen hits temps upwards of 100C in games with the default heat sink. I know the Intel sink is super cheap and small but is this normal or do you think there might be something wrong with the board causing this issue. Idles around 50-60 with no OC this just doesn't sit right with me. 
Thanks for all the help so far. 
 
 

i agree they are very hot! the case is completely open so air flow is not a problem. the sink is on properly and there is plenty of thermal paste. no dust this is fresh install.  case is clean and open so i have no idea what is going on... i'm going to re-flash to latest bios and see if that does anything
 

well I know how to put thermal paste on, done it don't know how many times now.   anyway i finally got the bios flashes to 3602 from 3302 or something like that anyway.   this has brought the temps down to what i would call manageable, idles at around 40C, haven't tested the load temps yet.  i'm going to have to rep the cheap Intel sink with something beefier but i can get by with what i have till i got the cash for that.  thanks for all the help guys

yeah it was oc'd and the i didn't disable anything that sounds so dangerous XD.  actually it did shut off giving me the temp error. i think because the loop wasn't being cooled the blocks may have effectively cooked the hardware even after everything shut off. just goes to show i guess don't matter how impressive your crap is, a small wrench in a big engine right.  the little adapter that connected the fans to the psu probably cost less than 2 cents to manufacture and ship.  guess i think twice next time right.