What to do if the video card often drops to 300, and then to zero. Drivers not responding later?

Question

Video cards

The video card resets the frequencies to 300, and then to 0 and starts to knock out on cd that the video card drivers do not respond, then it knocks out a gray screen as if the channel on the TV is not working.
Vidyakha RX 470 4gb g1 gaming

Answer 1

Are you serious about mining? Only the sick will do it.
And so rather wondering if there are artifacts?
Is the image normal before the frequency reset?
How smart was the previous owner of this video card in your opinion?
And whether the computer continues to work further after the appearance of a gray screen (it is easiest to determine by the sound of a video or music)
From the start, by the way, it’s good to cut the screen capture to see what is happening behind the gray screen. And is it vidyuha at all.
Well, in general it looks like acceleration with raising the voltage. The previous owner wanted to overclock it, overclocked it, it worked a little, the cold didn’t cope, it crashed, after he let it cool down, turned it on, saw that it worked, threw it off to default, saw that it was working fine for some time, decided to drive it as normal, it hit to you. The only normal way out is to go to the service and give them to be torn apart (diagnostics).