I bought a gigabyte rx 5600 xt and I have white flashes on my screen. When I play I have a black screen after 30 minutes or less and the sound stop working few seconds after this but the computer is on and I have to stop PSU. I have tried to reinstall the drivers and the basic bios but it didn't fix the problem.
(I think it's the gpu because I have tried to use the integrated graphics on my ryzen 3 2200g and it worked)
Sorry for my bad english.