vga post error

I've had a Red Dragon Vega 56 since late 2018. Earlier this year I BIOS flashed it to a Vega 64 BIOS and all was well. I had some hiccups with crashing if I didn't under-volt the card, but otherwise it ran all my games fine with no crashes, BSODs, etc. Yesterday I tried to turn on my PC, I leave...

Hello everyone, I'm a bit desesperate so i try to find new angle to solve my issue. I recently bought a 4080 Super FE but it never pass VGA post. My system : CPU : 5800x3D MB : B450 tomahawk max Ram : 32Go RAM 3200 PSU : Corsair TX750M GPU : 4080S previous one > 6950XT so about the same power...

My Parts, and my experience is about the 8 year mark with 10 pcs actually built and over 100 repaired (THAT's WHY I'M HERE FOR HELP) I've never had such an issue before, EVER. The mobo you see on the list wasn't the first one. The first one also gave me this issue. Here we go! I started off...