Horizontal lines before crash - ideas requested

[Paul of T]

I have an issue with my graphics card where the computer boots fine and over time (a few minutes)  I get these horizontal lines appearing more and more frequently and over larger areas before the computer crashes.  

It happens much more quickly if I boot a game.

 

Temeratures seem reasonable (around 60C) even at time of crash. I replaced the thermal paste which had no effect.

I have tried it in 2 computers (one Intel one AMD), same thing happens. 

The circuit board has no visible issues.

 

This happened when the card was new (I was unable to return it for various reasons, time has expired)

 

The card is an Asrock Phantom Rx 570.

 

Any ideas would be appreciated, normally I would probably just buy a replacement, but 2021 happened, thanks.

 

[leclod]

7 minutes ago, Paul of T said:

I have an issue with my graphics card where the computer boots fine and over time (a few minutes)  I get these horizontal lines appearing more and more frequently and over larger areas before the computer crashes.  

It happens much more quickly if I boot a game.

 

Temeratures seem reasonable (around 60C) even at time of crash. I replaced the thermal paste which had no effect.

I have tried it in 2 computers (one Intel one AMD), same thing happens. 

The circuit board has no visible issues.

 

This happened when the card was new (I was unable to return it for various reasons, time has expired)

 

The card is an Asrock Phantom Rx 570.

 

Any ideas would be appreciated, normally I would probably just buy a replacement, but 2021 happened, thanks.

 

you could try downclocking

[Paul of T]

51 minutes ago, leclod said:

you could try downclocking

Sorry should have mentioned that I tried downclocking significantly with no effect - thanks for the idea