Rolled way back to BIOS 1.04 and testing games again, if it happens in 1.04 then do you blame it on power supply? Will reinstall Windows 10 before I blame my 850W SuperNOVA.
 
Edit: It is not the BIOS
Edit2: Was not Windows, happened in 20 mins of Battlefront 2 with fresh install, just ordered a 650W gold from Newegg, gotta wait until Monday to see if that was problem.
Edit3: New 650W G3 swapped in, temps are 2c lower than usual, maybe ambient, but did crash still on prime95 this time about 1 minute in, No OC just Memory on profile 1. Testing games now.
Edit4: Happened again, crashed in games but this time I took out my EVGA CLC 280 and put my Corsair 100i in. I think CLC280 was making my motherboard say wrong temps, could've overheated my poor 6700k multiple times! (wrong)
Edit5: Instant crash prime95, time to continue with motherboard RMA, its been good for 2 years.
Edit6: Overclocking to 4.4 GHZ no longer crashes on Prime95, what could be causing my pc to crash with no OC?? Looks like I am ok if I OC for now.
Edit7: Still crashes after a while in game with OC, something is messed up with temps but two different AIO coolers seem to be working right, temps reported in program are different than on board.
Last Edit: 2 days of no crash gaming, the things I have done is flip the BIOS switch on my motherboard and updated it, swapped in a new EVGA power supply, and also reinstalled LAN drivers. My computer all of a sudden gave up on crashing, I am running no overclocks right now and plan to stay that way until 9th gen Intel.
 
Wiped drives and reinstalled windows 10 temps are down in 3dmark on cpu, good sign so far. 1h30m install on battlefront 2.
 
More info on my prob: My 1080 Ti FE Hybrid kit setup has been a mess in the last year. Sometimes it worked and sometimes it didn't. Conclusion is I ruined the fan controller on the GPU, right now gigabyte is fixing it and I will sell it. I have also abused the DDU uninstaller a bit too much, problems early year so I think a new windows is the trick. Recently I have been playing Battlefront 2, amazing fps on my Amp! Extreme, then cpu crashes and get the LED lightup near cpu. Hopefully I can settle this here and now and no more posts.
 
Found this online: When a PC instantly reboots/BSOD's when starting Prime95 a few things come to mind.
Most common is high temperatures, the others are a PSU fault, an unstable overclock,
the least common are a faulty motherboard and / or CPU.
 
I insta BSOD on prime95, my new PSU here on Monday, will report back then.

6700k has been seated since clc 280 came out, thanks for response, sometimes when I'm all alone with the pc I built in 2016 its nice to have a forum to post my problems to. This pc has thousands of hours of high fps 1440p gaming since.

Etny2k
Does this make CPU even more of the cause?

Nope.

Got in touch with Intel and they had me start an Intel stress test, it failed near instantly and here is the log (all default even memory):
 
 
 
--- IPDT64 - Revision: 4.1.0.24
--- IPDT64 - Start Time: 4/17/2018 3:58:05 AM
CPU1
Genuine Intel CPU Test
Module Version: 1.0.14.64b.W
Start Time: Tue Apr 17 03:58:05 2018
Test Result - PASS
Expected: GenuineIntel
Detected: GenuineIntel
End Time: Tue Apr 17 03:58:05 2018
Total Time: seconds: 0
--------------------------------------------------------------------
CPU1
CPU Brand String Test
Module Version: 1.0.17.64b.W
Start Time: Tue Apr 17 03:58:05 2018
Test Result - PASS
Expected: Intel(R) Core(TM) CPU @
Detected: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Intel(R) Core(TM) processor detected..!!..
End Time: Tue Apr 17 03:58:05 2018
Total Time: seconds: 0
--------------------------------------------------------------------
CPU1
Cache Test
Module Version: 1.0.14.64b.W
Start Time: Tue Apr 17 03:58:05 2018
Test Result - PASS
--- Reading Cache Size ---
- Detected L1 Data Cache Size --> 32
- Detected L1 Inst Cache Size --> 32
- Detected L2 Cache Size --> 256
- Detected L3 Cache Size --> 8192
Cache Size Test Passed!!!
End Time: Tue Apr 17 03:58:05 2018
Total Time: seconds: 0
--------------------------------------------------------------------
CPU1
MMXSSE Test
Module Version: 1.0.19.64b.W
Start Time: Tue Apr 17 03:58:05 2018
Test Result - PASS
DetectUtils64 DLL Version - 1.1.2
--- Determining MMX - SSE capabilities ---
..MMX is supported on this CPU..
..SSE is supported on this CPU..
..SSE2 is supported on this CPU..
..SSE3 is supported on this CPU..
..SSSE3 is supported on this CPU..
..SSE4.1 is supported on this CPU..
..SSE4.2 is supported on this CPU..
MMX Test Result --- PASS
SSE Test Result --- PASS
SSE2 Test Result --- PASS
SSE3 Test Result --- PASS
SSSE3 Test Result --- PASS
SSE4.1 Test Result --- PASS
SSE4.2 Test Result --- PASS
End Time: Tue Apr 17 03:58:05 2018
Total Time: seconds: 0
--------------------------------------------------------------------
--- IPDT64 - Temperature Monitor Results
Temperature Monitor will run in parallel with compatible modules
--- Temperature Test ---
...
Version 1.0.17.64b.W
...
DLL not initialized
Current Junction Temperature is 0C
Current Degrees Below Max 0C
Maximum Junction Temp Allowed 0C
Test Result - FAIL
Please check your Processor Thermal Solution
Temperature Monitor Stopped by User
--------------------------------------------------------------------
System Information
------------------
Processor Name: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
Processor Information: Family 6 Model 94 Stepping 3
Number of Physical Cores: 4
Number of Logical Cores: 8
Operating System: Microsoft Windows 10 Pro 64-bit
Graphics Information: NVIDIA GeForce GTX 1080 Ti
System Product: 142-SS-E178
System BIOS: 2.05
System Serial Number: Default string
--------------------------------------------------------------------
--- IPDT64 - End Time: 4/17/2018 3:58:05 AM
--- IPDT64 - Result: Fail
--------------------------------------------------------------------

Intel makes me do all stock settings, thats where my prob is, I am unstable at stock instantly. But even at overclocked a tad it passes test but still crashes in games after a while. The pump seems to be doing its job. Either the motherboard is at fault or the cpu. I am swapping back and forth to EVGA and Intel trying to figure out the problem. This is frustrating, do I just ask EVGA for a motherboard RMA or ask Intel if I have warranty on my 6700k?

^ This. Intel is usually very lenient with providing CPU replacements.