Issues with either Intel ME or BIOS

[NR26]

So I recently upgraded to a Z790-E Gaming Wi-Fi and have a T-Force Delta RAM, it's 32GB and 6000MHz.

It was stable with the most recent BIOS (1202) and oldest (origin) Intel ME version with XMP on even without meeting QVL requirements.

Ever since the Intel ME update I did, the XMP stopped working, making the PC not boot + give the Q-Code 55, so I changed it to 38-38-38-78 1.25v and was able to boot.

What happens now is that the PC is "mostly" stable, but from time to time a BSOD related to potential RAM issues happens, like "IRQL NOT LESS OR EQUAL". I already ran MemTest from BIOS and the RAM passes the tests wonderfully with no errors, I also do SFC SCANNOW to check if there's issues, but there are none, so I don't know what else might be causing this.

Is it perhaps some windows corruption? Is it the BIOS or Intel ME?

Any help and feedback would be appreciated.

[Silent_Scone]

It’s not uncommon for ME firmware to break overclocking stability in some cases but it depends how conditional the overclock was in the first place.

Try XMP II which is the default DIMM profile and often has relaxed subs.

Memtest86 may not pick up the instability in the OS, so run a dedicated memory stress tool such as Karhu RAMTest or MT5

[NR26]

I just tested the RAM sticks individually and one worked at 1.35v while the other didn't (each in both slots), so it's a RAM stick issue.

Going to RMA it