[SOLVED] ntoskrnl WHEA UNCORRECTABLE ERROR

Dec 5, 2018
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Whenever i play any game my pc crashes, no BSOD happens just a reset crash. I check the dumps and get the ntoskrnl crash. I have tried using different RAM, different CPU, tested the GPU, different HDD with reinstalled Windows 10, different PSU. This only started happening after installing new GPU, the RX 580 but i tested on another PC and no crash. At this point im convinced its my motherboard.

My Specs
Motherboard: GA-78LMT-USB3 Rev 6.0
Cpu: Fx 8370 Octa Core 4GHz
Gpu: Radeon RX 580 8GB Nitro +
RAM: 16GB 1333MHz
PSU: ATM-550FB-B
 
Solution
Ok i disable 4 cores and lower gpu limit by 50% and no crashes so far
So it like I said before, either the MB has problem to handle the fx8370 or the PSU has problem to handle the whole PC, or the GPU does not run stable.

And may try this:
Only disable two cores, keep the GPU power to 50%, test the PC. If the PC runs fine, up the GPU power to 80% to see what happens. If the PC runs fine, then up the GPU power to 100%, then test the PC again. In this way you may know the GPU runs fine or not.

If the PC will crash when you only disable two cores with GPU power setting in 50%, I will say the MB has problem to handle the fx8370.
The WHEA errors related to the hardware. And either the MB or PSU may cause the problem.

1) The MB ( GA-78LMT-USB3 Rev 6.0 ) does support the fx8370 in theory, keep in mind it has only 4+1 phase power, so it will not support the fx cpu 8 series properly. You can find the similar problems online. I don't know what other cpu you had, because you said you test with other cpu too. If you had the fx 6xxx, then use it.
You can test them like this: boot into the BIOS, disable few cores, also remove the rx 580, use onboard ATI Radeon HD 3000 graphics. If the PC does not crash, then try to enable the cores to see what happens.

2)
This only started happening after installing new GPU, the RX 580 but i tested on another PC and no crash.
Did you use the same PSU with the rx580 in that PC?
For the PSU, test like this: if the PC runs fine with few cores disable with onboard AMD iGPU, then add the rx580 to run the PC again.
Also may boot into the BIOS, in hardware monitor section ( or in PC health monitor section), check the +3.3V, +5V, and +12V, you want to see those voltages are within +/- 5%. Like +3.3V, it should be within +3.1V to +3.4V. Otherwise the PSU is not good.

3) You may update the AMD chipset driver https://www.amd.com/en/support

4) Also use DDU to uninstall the GPU driver in safe mode, then reinstall the GPU, but you already reinstall the win10, so the GPU driver may not have problem.
DDU https://www.guru3d.com/files_details/display_driver_uninstaller_download.html
 
Dec 5, 2018
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1) The thing is i used the FX 8370 before and there was no problem, it was when installed the RX580 that the crashed started.
The other CPU i tested with is the FX 6300.

2) No i didnt use the same psu (550W) on the other pc but i did use the psu from the other system (650W) and still got a crash. I used same psu (650W) on two different systems, one crashed and the other didnt.
 
1) The thing is i used the FX 8370 before and there was no problem, it was when installed the RX580 that the crashed started.
The other CPU i tested with is the FX 6300.
That means the PSU may have problem to handle the whole PC, I can't find the review for that PSU ( ATM-550FB-B ), and you don't list other 650W PSU specifications either.
From what I know, if the PSU is the good brand, and 550W should be fine to power that rx580.

One more, may try to use MSI afterbuner to set the GPU power limit to lower to test, if you can run the PC fine, you know the PSU has problem to power the whole system, or the GPU will not run stable.
https://www.msi.com/Landing/afterburner

 
Dec 5, 2018
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The 650W psu is a Corsair RM 650x modular psu
 
Dec 5, 2018
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Ok i disable 4 cores and lower gpu limit by 50% and no crashes so far
 
Ok i disable 4 cores and lower gpu limit by 50% and no crashes so far
So it like I said before, either the MB has problem to handle the fx8370 or the PSU has problem to handle the whole PC, or the GPU does not run stable.

And may try this:
Only disable two cores, keep the GPU power to 50%, test the PC. If the PC runs fine, up the GPU power to 80% to see what happens. If the PC runs fine, then up the GPU power to 100%, then test the PC again. In this way you may know the GPU runs fine or not.

If the PC will crash when you only disable two cores with GPU power setting in 50%, I will say the MB has problem to handle the fx8370.
 
Solution
Dec 5, 2018
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Ok thanks for everything, this helped alot.