Question GPU problem. Needs help!

Oct 2, 2020
Hi, I'm new to this forum. I have a problem with my GPU (Vega 64 Air). When playing I have a 'black screen' problem, the speed fun of my card is 100%. I replaced my old PSU with a 1000w Cooler Master (Oversized I know), thinking this was the problem. But nothing, the problem exists and I don't know how to solve it anymore. I thank all those who will give me a hand in this now become 'problem'.
I have the same problem for every game. (occurs when I increase the video settings)
CPU : Ryzen 5 2600
MB : Aorus B450 Elite
GPU : Vega 64 Air
PSU : Cooler Master 1000w
RAM : 16 GB DDR4 3200Mhz HyperX
Air dissipator
And 3 RGB fans

I Want to specify that i have already used another GPU (RTX 2080) in my build and it works, i have so unistalled and reinstalled drivers (
but the problem already existed) . When my vega 64 starts to crush i see a drop of FPS in game and after this , i have a black screen.
Could it be a temperature problem?

Thanks in advance