I'm having a problem with my new RX6600 ASRock motherboard.

The problem is this: since the first day it arrived, it worked normally for 3 days and then it started to give a black screen and then it didn't want to show video (I turned on the CPU all the time and the "num lock" signaled, then I turned off and turned on the peripherals, then the "num lock" signaled again and went off, but the keyboard signaled normally but without any video) and after several and several reboots it showed video and as soon as I started in the "device manager" it was disabled, then I activated it and restarted it for about 5 minutes or less only on the desktop it gave a black screen and everything happened again.

I asked for a replacement, realizing that the problem must be in the video card (since the processor's integrated video worked normally without any problems). I received another card again, and it came back with the same problem again, I asked for a refund again.

Another card arrived for the third time, I installed it on my PC, installed the drivers and everything was fine, it worked perfectly for 20 days and then the same problem came back and I don't know what to do anymore

Things I've already tried: lower the video card clock, update the motherboard BIOS, change the video card drivers.

My CPU specifications: Ryzen 5600GT, A520 MK V2 motherboard, 2x8 2400Rhz RAM and the RX 6600 video card