Broken GPU 5970 Help

[Trini8ed]

So this card has been weird I have tested it by itself works fine in windows but whenever anything intensive happens to the gpu it crashes. Even a 1080p video crashes the computer or gives a blue screen, all of my other cards work fine, it is a sapphire 5970 btw. When I was mining on it the amd display drivers would crash a lot the first gpu if put more then 11 aggressions on would crash. As for now when its a primary card anything 3D or intensive will crash it. Should I consider putting it in the oven or does that have a really low chance of fixing he problem and breaking the card entirely.

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[AvalonMiner]

This could be an issue with power, if your 5970 as full load is using more power than your power supply can handle then your pc just shuts down, If that isnt the problem it could be overheating.

[Trini8ed]

This could be an issue with power, if your 5970 as full load is using more power than your power supply can handle then your pc just shuts down, If that isnt the problem it could be overheating.

Its the card I have no issues with my system running all 3 of them at once or even the 2 working ones at once. Its the card does this even when i run it by itself.

[RedRobin2442]

Do you have any experience with a reflow station at all? Stay away from the oven if you can. You can even get a small forced air heat gun for cheap at harbor freight.

[Trini8ed]

Do you have any experience with a reflow station at all? Stay away from the oven if you can. You can even get a small forced air heat gun for cheap at harbor freight.

Don't know what a reflow station is and not sure about what to even use the heatgun on.

[Trini8ed]

Put the card in the oven at 395 for 7 mins put it back together same issue then put it in for 400 for 10 mins still same results, It still boots into windows. I can get the gpu to do furmark if i underclock the core to 400 but anything past that will crash the card any advice on how to fix this is appreciated. What do I do next?