For the last month I've been struggling with my new PC. It's the first one I built and it worked fine for a few days (I had a Sapphire Radeon RX5700 XT Nitro+ at that time). Then suddenly my screen went black, but the PC stayed on. This happened over and over again. I tried plugging my monitors into my Mobo, that worked fine. So I figured it was a problem with my drivers, so I reinstalled them. Still got random black screens. I tried using my old 1050 Ti, worked fine. The card must be broken then, so I sent it back for a replacement. Uninstalled drivers with DDU, installed the Radeon drivers, still got black screens with the brand new GPU. Then I thought it was the AMD drivers since I've seen a lot of people complain about those. I called support from the website i bought it from, and asked if I could send that card back. They told me I would get a refund for it if I sent it back, so I did that. That was two weeks ago, still don't have my money back. Right after I sent my 5700XT back, I got a Gigabyte RTX 2070 OC. I've been using it for a week now, and I have already gotten the same black screen / freeze problem again. Now I really have no idea what the problem could be.
Anyone know what to do here?
My build:
Motherboard: ASUS ROG Strix Z390-F Gaming
CPU: i7-9700k
PSU: be quiet! Straight Power 11 (650W)
RAM: Corsair Vengeance RGB Pro (16 GB)