The video card turns off, but not from overheating, why?

Question

Video cards

The video card is disabled, I do not understand why. Initially there were high temperatures, but it worked stably. I sinned on the thermal paste. Replaced it with thermal pads.
As a result, temperatures dropped in the furmark, but when I start the miner, it cuts off.

The throttle on it also makes noise, such a squeaky clattering sound. In the furmark it is, but during mining it was not usually.

Answer 1

So, I'll summarize, maybe it will be useful to someone. Checked in Furmark, VideoMemoryTest - the result is good. In mining, it still crashed.
It was decided this way: I set the Clock of the GPU and memory to the maximum minus in Afterburner and slowly overclocked it.
There are options:
1) with a quick start of mining, the block could not cope with the take-off load and squandered the voltage. After all, miners write in low-level jap for speed.
2) Since I changed the thermal pads, they may not have all fit so tightly to the memory chips since the new one. And when they warmed up, warmed up and got up as they should.

Answer 2

If not the temperature, then the power supply.
Do not load it with just mindless mining, 2k20 is in the yard.

Answer 3

It is possible that something has deteriorated / burned out on the board itself in the power module circuit.

Answer 4

Hello.
This usually happens when the chip / memory is overclocked. Try resetting overclocking to default and overclocking more carefully. Most likely this is the issue.