Is my GTX 1070 dead?

[Finners]

I brought a second hand power supply and thought I'd test it with a bunch of spares I have lying around. System powered up fine and I was just leaving heaven benchmark looping as to draw some power to see if the PSU coped ok.

I started getting crashes of Heaven. I could get it to crash faster by upping the power limit in afterburner until the point now where all I get is a black screen. The computer passes POST slowly, it hangs on VGA for a while before booting into windows. It does boot to windows as I can hear the log in sounds.

I have tried an old known working PSU with the same outcome.
A known working GPU and I get an image and boot to windows.
If I put the GTX 1070 into my main PC I get the same black screen but it does actually make it to windows

I have tried resetting BIOS also tried TV and monitor and HDMI and display port.

I can't think of anything else to try.

Now if it has died on me, I have no way of knowing if this new(second hand) PSU killed it and I should not risk any more equipment with it or if its just a coincidence and for whatever reason the GPU didn't like being sat in a box a long time and then put under strain.

Test system was
Ryzen 5 2600
MSI b450 carbon pro
16GB
GTX 1070

all stock

Can anyone suggest anything else to try before I strip the card apart and look for physical damage?

EDIT*

Update. I switched over to my onboard a put the GTX 1070 in and in device manager it has an exclamation mark next to it. Properties tells me windows has stopped the device with error code 43.

I've stripped it down and the TIM was terrible. Temps were ok though when running heaven earlier they were low 70's

I'm wondering with so much of the die without TIM on (this was the factory stuff I had to remove the warranty sticker and I brought the card new) if maybe somewhere has overheated and broken. Even has a nice hair right in the middle!

 

[tyler_jrb]

If you have tried all the main things such as bios, drivers, cables, other cards, other system etc. Then likely it’s dead/dying.

Perhaps overheated in areas on the die where the paste had dried up. You try new paste but I very much doubt it will achieve anything.

Could be time for a bake in oven at 215c for 15mins to reflow solder as a last chance.

I would first inspect the pcb see if you can see anything wrong/damage. Other than that not a huge amount can be done.

 

[ver01@]

It's dead unfortunately.

 

[JediFragger]

Also try downclocking the core and memory just in case it helps.

 

[Lokken86]

As mentioned it’s worth downclocking. Have a similar issue with an rx480 that will only run stable if it’s -5% on the core clock speed.

 

[Finners]

Thanks for the suggestions but I can't even see the screen so no chance of being able to downclock it. Unless I can find a BIOS with lower speeds but feel like that is clutching at straws