Question RX5700 loss of signal problem

[OverclockVintage]

The GPU gives me black screen and a brrrr sound comes out of the speaker after somewhat half an hour of gaming or 1and a half hour of regular windows usage, i've tried turning of HDCP and also adjusting everything i found on the internet regarding software and nothing helps at all.

Another problem that is probably related is that the screen sometimes gets full of random colored pixels just like that:
https://i.sstatic.net/fpBgo.gif
Then i have to turn monitor to another output then back to hdmi and the gpu comes back to normal.
What chances is of the problem being on the GPU chip itself? What other components are most likely?

The computer is fine with another amd gpu so im am pretty sure it is the gpu, i also reinstalled windows and did everything possible to be sure it is the gpu.

More info: If i try to use one of those cables that one side is DisplaPort and another is HDMI the screen keeps blinking, and that is probably related.
Thanks if anyone can help me i appreciate.

 

[JohnBonhamsGhost]

include your complete system specs with make & model of ALL components

 

[KingLoki]

Hi, Have you tried a different cable?
Have you done a clean install with the GPU drivers?
Is your CPU or GPU overclocked?

 

[JohnBonhamsGhost]

without knowing which particular GPU(s),
what specific model PSU,
what CPU, motherboard, RAM kit(or improperly mixed modules), possible temperature issues, etc...

we can have no idea what may be causing any problems.

 

[OverclockVintage]

Ok Guys here it Goes:
The particular GPU is an Asrock challenger sold by the brand name Envinda with another heatsink.
My PC specs are:
An Asus P9X79 with a xeon 2697v2
Ram is Gskill ripjaws 1866CL9
Power supply is a Corsair CX600

 

[JohnBonhamsGhost]

What other components are most likely?..
Power supply is a Corsair CX600

the CX series are some of their lowest quality units.
i wouldn't be surprised if it just cannot provide steady power for heavy usage.

 

[OverclockVintage]

the CX series are some of their lowest quality units.
i wouldn't be surprised if it just cannot provide steady power for heavy usage.

I can't rule out the psu also because my other computer has a Gigabyte 550w bronze, so i won't even test on the other computer. But i really don't think it's the psu because of the particular symptoms, but if you are saying let's hope it's the psu and not the gpu since the gpu is more expensive.