Just for the people who don't know how this works...
Sometimes over time, heating and cooling with on-off cycles, solder will develop very small cracks that are invisible to the naked eye. If these get bad enough you may experience issues, in a gpu that means artifacts or non-function. Heating the card will briefly reflow the solder, getting rid of the fractures.
It only works in a some cases because not all gpu problems are caused by faults in the solder. Many gpu problems are caused by other things. So if you don't have warranty and all else has failed, then pull off the heat-sink and everything and give it a bake.
+1 on the video, I like to see members going the extra step.
Originally Posted by Nautilus
I wouldn't do it even if somebody points a gun to my head. That's insane seriously.
@ OP: You didn't show us these horizontal lines so how do we know you have a defective card in the first place? There's also no evidence that card waited for 10 minutes in that oven. There isn't any stopwatch showing for how long the card has been in there. Even if you put a stopwatch how can you assure us that you did not take the card out of oven the time you stopped video and put it back in there before you started recording again? Sorry but I don't believe this.
Ugh, I hate skeptical people who come here and because they've never heard of it think it must be crazy and basically call you a liar. This is a known thing. It has worked for many people with the problem I specified above. Don't come here calling him a liar with no proof.