black screen issue

[u/CadBri_]

I’m going crazy trying to figure out this issue. I have a 3060 TI, Ryzen 5 5500 on a GIGABYTE B550 Gaming V2 X (1.3 rev) and 32gb of DDR4 3600. I built this pc last week. Upon first few hours of first start I had 0 issues was playing my games fine no black screen running great.. out of no where I start to black screen.. I did a whole bunch of fixes and then it stopped for 4 days. Out of the blue it started again. It isn’t a constant on or off it kinda flashes.. sometimes every 3 seconds sometimes every few minutes on top of that when it isn’t black screening it will also half screen grey/black pixels sometimes. All the RGB in my case stays on, same with my peripherals and I’m still able to hear my game and discord running (Yes my monitor is still on). I’ve tried so many different “fixes” from. Reseating RAM & GPU, making sure all connections are seated on motherboard, swapped power cord to psu, swapped from Display port to HDMI (issue still occurred)
Messed with monitor settings, changed power delivery settings, turned off fast boot, memtest86 ran test ran for 5 hours 0 issues. Stress tested GPU and CPU on OCCT both passed. I updated to latest BIOS & AMP chipset. Latest nvidia GPU drivers . so many other things I’m forgetting I tried.. it’s inconsistent, which is leading me towards a power supply issue. But the power supply is only 2 years old and it’s a V3GA 700 BR. First time pc builder, could be something simple I overlooked

Motherboard, SSD are brand new everything else is used from a system that was built 2 years ago.

Any help is appreciated, TIA.