So I recently upgraded my MB and CPU while building a PC for my wife. Basically what happens is while playing a game that uses quite a bit of resources, my PC will shut down and restart and I could actually smell some kind of burning. This weekend, I actually saw sparks.

I have the I7 4790K 4GHz CPU, I've turned overclocking off and even replaced the cooler with this one: http://www.zalman.com/global/product...ad.php?Idx=461

Any ideas on how to sort this out?