Windows 10: frequently BSOD everytime after appr. 30min

Hey Folks!

Had in the past already random BSOD with the current machine (at that time Win7 and Win8.1) but just one in two or three months.
After I upgraded the machine to Win10 I'm facing heavy frequent BSOD everytime after appr. 20-40mins and also directly when starting the PC (restart Loop and after 20 times I can sometimes start into OS).
Did already lot of Research which Hardware could be the defect one
1. did memtest86 for over 24 hours (19 passes, 0 not passed) => assume RAM is working properly
2. did all possible Tests with seatool (everything ok, all passed), related manufacturer Software also tells everything is ok => assume SSD is working
3. disconnected all Hardware and ran Driver verifier and again BSOD => Driver verifier detected faulty INTEL Driver so I installed my graphic Card again
4. again BSOD => Driver verifier detects NVIDIA Driver is the faulty one (audio), so I deactivated them
5. again BSOD => Driver verifier detects Network Driver is faulty and I deactivated them
6. again BSOD => Driver verifier does not detect a faulty Driver (unselected all Microsoft Drivers at the Setup as requested in the tutorial) but the dump tells me the ntoskrnl.exe has some Problem

At this stage I assume eather the CPU or the Motherboard has some defect but I can not tell which one (no professional) and if this assumption is correct. Since I have read lot of Posts where lot of People are writing most of the times when it Comes to only CPU or Motherboard are defect, it is the Motherboard.

I have added all relevant informations and data (hopefully). If something is missing, please just request it and I will post it.
Please help me out to decide whats the Problem with my PC and not unnecessary have to buy expensive Hardware as replacement for something which is in fact working properly.

Thanks a lot!

:)

 

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