Gigabyte TRX40 Aorus Xtreme, can it handle 256GB of 3200MHz ECC RAM?

I have a gigabyte trx40 Aorus Xtreme rev 1.0 paired with a 3970x and 8x32GB of Micron 3200MHz ECC UDIMM. It seems to work for the most part, but ever since upgrading to this from 4x16 GB of 3200 G.Skill Trident Z Ram I can no longer get into the BIOS from within windows using this method:

"Or, if Windows is already installed, from either the Sign on screen or the Start menu, select Power hold Shift while selecting Restart . Select Troubleshoot > Advanced options > UEFI Firmware settings .

I can normally get into the BIOS if I boot from my 5500xt in the third PCIe slot, however, if I boot from my 1080ti in the first slot it is often hit or miss. FWIW, I think it’s probably possible that I’m able to get into the BIOS by hitting the delete key, it’s just that the video output doesn’t get sent to the monitor so it remains dark and thus I can’t tell if the splash screen to enter is showing or not; but that is a guess. I’m wondering if this is a sign that my motherboard is unable to handle 256 GB of RAM running at 3200?

Note since it’s ECC RAM, I am not running any XMP profile (or whatever AMD calls it). The RAM stays at the default 1.2V and the CAS latency is unchanged, which is set at 22 I think. I’ve upgraded BIOS, Used default BIOS settings with ECC turned on, and still have this problem. I’ve also re-installed windows after upgrading the RAM and still have the problem.

I have run Memtest 86+ with the beta 9 version which supposedly tells you if there are ECC errors. All tests have always passed perfectly. But I’m not sure if that is just because the ECC RAM is fixing 1 bit errors or if my RAM really is running perfectly.

Would the 1.1 version of the board handle large RAM sizes better? I’m a skeptical that the 1.1 version is actually better as 1.1 came out at the same time Gigabyte had to redesign some of their lower end boards because of a component supply shortage (https://www.kitguru.net/components/motherboard/joao-silva/shortage-of-pwm-doubler-forces-gigabyte-to-redesign-motherboards/). If anyone can confirm that revision 1.1 of the board is better for high memory capacities and speed I would greatly appreciate it.

Any feedback would be welcome!

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