[Solved - RAM defective] Several BSODs since a few days

Windows 10 Pro (1803)
CPU: Ryzen 7 1700 (happens with both OC and stock)
RAM: G.Skill Flare X DDR4-3200 (happens with both OC and stock)
Motherboard: Asus Crosshair VII Hero Wi-Fi
GPU: MSI RX 480 Gaming X 8G (stock)
SSD: WD Black 256GB NVMe
HDD: 2x WD Red 8TB (white label) / 1x HGST 7k3000 / 1x HGST 7k4000
PSU: Seasonic Prime Platinum 850W

BIOS is the latest version.
All drivers are up to date.
I lost count how many times I un- and re-installed the GPU driver (trying different versions / 18.12.X and 18.10.1, doesn’t make a difference).
Did it in Safe Mode and using DDU (latest version) and AMD CleanupUtility.

It started with a BSOD IRQL_NOT_LESS_OR_EQUAL a few days ago.
Then a few MEMORY_MANAGEMENT, atikmdag.sys, dxgmms2.sys and SYSTEM_THREAD_EXCEPTION_NOT_HANDLED.

This happens in World of Warcraft after ~15-30min. On one occasion when just Firefox, Twitch App and Discord were open.

DISM, SFC Scan, Windows Memory Diagnostic didn’t show any errors/solved the issue.

I tried to zip up the Minidump files but it always tells me “Access is Denied” and outputs a 1kb zipped folder, so I don’t know how I can provide those.

I’m at my wits end as nothing seems to work.

Got the Minidump files zipped (just wouldn’t work directly in the folder).

https://drive.google.com/open?id=1vErnTaTsrlcwyDPR5M_yGlzR3OjVTwrN

Just had another BSOD (MEMORY_MANAGEMENT) after a few hours without issues.

Minidump file:
https://drive.google.com/open?id=1Oa5YiJszcWOjzwPiesZdkXHAV-B-KrHo

And the memory.dmp file:
https://drive.google.com/open?id=1AML0nYXmkaIW_AnjFd9i5839jIHruoDN

At the time it occured I had FF, Twitch App, Discord App and Deluge running.
OC: CPU - 3.85GHz, 1.3V, RAM - DDR4-3200 C14-14-14-28. 1.4V

Just found a way to trigger the BSODs (3 kinds so far) by running a scan with Malwarebytes. It always hangs for ~1sec and then immediately shows the BSOD at “Scanning File System”.
The 3 BSODs I was able to trigger that way (kinda hoping to see which file would cause it, no real success though. one of them was D3DX11 related) were:

  • SYSTEM_SERVICE_EXCEPTION_FAILURE (cause: ntfs.sys)
  • BAD_POOL_HEADER (the scan froze at D3DX11, I think)
  • KERNEL_SECURITY_CHECK_FAILURE (followed by Windows not loading correctly and sending me to the repair screen).

UPDATE: uninstalled and installed the newest version of Malwarebytes and no more BSODs. Scans completely to the end with the Threat Scan and finds no threats.

nvm, started a complete scan and had a BSOD again (KERNEL_SECURITY_CHECK_FAILURE).

Update: I think I found the culprit:

edit: I wouldn’t even have suspected the RAM cause I did a 15h run with Memtest86 which ended in 18 successful passes with BOTH the RAM and CPU OCed.