ASUS RoG G20CB PC black screen/freeze, crash, fans ramping up to 100%.

Somewhat recently my computer has started crashing either the game or the entire PC. For games such as WoW on optimal settings it will first freeze for a second or two>the screen will go black but you can still hear the audio>then the audio freezes and I can't perform any commands at all>then everything goes back to normal and the game will run normally again for about 10 seconds before the whole process happens again.

On a game like Warframe everything will run smoothly for about 10 minutes whilst in a chaotic environment in game, full of enemies and particles and what not, and then usually every time the mission is about to end the game freezes>goes black screen followed by sound cut> then my monitor no longer recognizes that there's anything in that input and displays " no signal " > then my fans start going 100% and will continue to do so unless I hold down the power button to force a shutdown.

On random occasions the black dialog box pops up on screen and does a quick thing and disappears, I don't know what that's about.

Here's what I've tried:

Clean reinstalled the latest graphics drivers twice; once through GeForce experience and once manually.
Ran MEMTEST Pro, passed with 0 errors found.
Ran Prime 95 overnight, passed with 0 errors found.
Ran windows memory diagnostic, passed 0 errors found.

I will list all of my specs below and I would greatly appreciate any help, thank you.

Windows 10 64-Bit
System Model: ASUS RoG G20CB
BIOS: 1601
Processor: Itel(R) Core(TM) i7-6700 CPU @ 3.40GHz (8CPUs)
Memory: 16384MB RAM
DirectX Version: DirectX 12
Chip Type: NVIDIA GeForce GTX 1070
DAC Type: Integrated RADMAC
Display Memory: 8096
Shared Memory: 8156
Sound: LG TV-4 (NVIDIA High Definition Audio)
Reply to rffujin
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More about asus rog g20cb black screen freeze crash fans ramping 100
  1. Bump.
    I've tested it with a few more games and it seems like anytime a game puts even minor stress on my computer either the game crashes or the whole PC does.
    The fans sound like they're working fine, and I can feel cool air coming out of the case. I've never opened the PC up since I bought it pre-built. I just don't see how it can pass stress tests fine, but then crash from even less stressful games like Heroes of the Storm.
    Reply to rffujin
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