Hello, I'm seeking an advice about the video card I bought some time ago, It came with a capacitor detached due to the poor packaging.
I was unable to restore the original one but I found another with the same values (it was surface mount).
Then when I tried the card, it showed issues on 3d applications (like 3dmark), the screen is plagued with horizontal marks.
I did different tryings but without being able to solve the issue: cleaning of the card and changed the thermal paste under the heatsink, lower both gpu and memory clocks to minimum values, tried the card on several pc.
I suspect it could be a gpu issue, because in windows everything is fine, while in 3d those are the issues, plus on 3dmark2k1 in the nature test there are several more rendering errors.
Vanilla card: https://i.imgur.com/RYfURSt.jpg
My card front: https://i.imgur.com/oA6bVYs.jpg
My card back: https://i.imgur.com/SC0YUc3.jpg
Artifacts: https://i.imgur.com/3f0ccUv.jpg

If the issue is the gpu, what can I do? I was thinking about trying to reflow it with a heatgun.

Thank you for any help.