Make it a warranty issue with its maker. If self made then look for errors in the part selection like a quad rail PSU and more.
not sure if posting in the right spot but, every time i start a game it will run smooth then it will freeze the sound will loop and pc wont respond for about 30- 50 seconds and always seems to happen at the worst time.also just replaced hard drive so not that, also nothing is running hot .started in cs go but know its happing in other games so I no longer believe it has to do with just csgo, only happens well playing games when it dose not freeze run smooth and strong no hip cups. also dont have the problem when just using windows its self internet watching videos etc.. video to see what i mean - https://www.youtube.com/watch?v=FoWADKQHjEU&feature=youtu.be
***UPDATE*** I have upgraded to windows 8.1 that has solve the error in the device manger how ever the problem still exist, I have ran memtest86 and have got 0 error's, all my drivers are know fully up to date and I still have the problem.and it has gotten worse the game is know unplayable and freeze every 20 seconds