RAM Issues / Dual Channel

Hello,

I'm a bit puzzled regarding the RAM of my PC.

I recently built it, my motherboard is a Gigabyte B760 DS3H AX DDR4. My RAM modules are 2 sticks of 16 GB each, G.Skill Aegis 32 GB (2 x 16 GB) DDR4 3200 MHz CL16.

The motherboard manufacturer advises installing the RAM in Dual Channel on slots A2 and B2.

But it doesn't boot when I do that. Other positions cause different reactions, and I will detail them:

In A2 + B2, as recommended on the motherboard's website, it doesn't work.

Red SDRAM light + no boot on the screen, but the fans start.

If I use a single stick:

In A1 or A2 it doesn't boot. Red light on SDRAM, fans OK.

In B2 alone, it boots up, no red light, regardless of which stick I use (I tried both, one after the other).

Same goes for B1 alone.

If I use both sticks in A1 and A2, it doesn't boot. Red light on SDRAM, fans OK.

If I use both sticks in B1 and B2, it boots up, no red light.

When it boots, I tend to get a BSOD after a certain time, regardless of what I do; it could take 10 min, 1h, 6 hours... It's a bit random.

At times when I move the sticks, it first tells me to restart to load optimized default settings, but not every time; I don't quite understand if it's related to the change of sticks or to their position.

I have the impression there's a problem with my A1 and A2 slots on the motherboard, which isn't too serious (though it's a bit silly for a new motherboard), but the fact that my PC crashes randomly, and often not long after it starts, is more concerning. Plus, I can't benefit from Dual Channel.

Could any of you help me diagnose a bit more precisely what's going on?

I can buy new hardware if necessary, but I'm not even sure if the problem lies with the BIOS configuration, compatibility, one part or another, etc... :lol:

Thanks in advance,