PC freezes when im playing a game

[MustardTiger2898]

i recently upgraded my PC i put in a new GPU, CPU/new heat sink , and new motherboard (Asus strix 1080, intel i7 6700k, asus rog maximus hero alpha. when playing a game and watching a stream on my other monitor, my whole PC freezes and makes a loud noise (im guessing the noise is from the game). The first time this happened my PC blue screened and restarted itself. I did notice my GPU was pretty hot so i downloaded asus GPU tweakII and adjusted the fan speed. Then it happens again but this time it doesn't crash my PC it does it for 2 seconds then stops freezing. The stream i'm watching goes black and reloads. I also noticed my game stuttered sometimes.

Is it a CPU issue, GPU issue, HDD issue, or something else?

PC specs:
intel i7 6700 with a cooler master 212 hyper evo (and thermal compound)
Asus ROG maximus hero alpha
Asus strix GTX 1080
thermaltake 600W PSU
WD HDD 2TB
Seagate 2TB

 

[MustardTiger2898]

MERGED QUESTION
Question from MustardTiger2898 : "PC freezes when im playing a game"

i recently upgraded my PC i put in a new GPU, CPU/new heat sink , and new motherboard (Asus strix 1080, intel i7 6700k, asus rog maximus hero alpha. when playing a game and watching a stream on my other monitor, my whole PC freezes and makes a loud noise (im guessing the noise is from the game). The first time this happened my PC blue screened and restarted itself. I did notice my GPU was pretty hot so i downloaded asus GPU tweakII and adjusted the fan speed. Then it happens again but this time it doesn't crash my PC it does it for 2 seconds then stops freezing. The stream i'm watching goes black and reloads. I also noticed my game stuttered sometimes.

Is it a CPU issue, GPU issue, HDD issue, or something else?

PC specs:
intel i7 6700 with a cooler master 212 hyper evo (and thermal compound)
Asus ROG maximus hero alpha
Asus strix GTX 1080
thermaltake 600W PSU
WD HDD 2TB
Seagate 2TB

 

[kanewolf]

Did you do a clean OS install with the new motherboard? If not that is quite likely one of your problems.

 

[MustardTiger2898]

i thought i was going to have to but i didn't. But i need a new product key because for some reason when i restarted my PC it said i needed to activate my windows but it couldn't activate