gpu burned... cause ?

[x4v11]

Hi everybody,

I built a new computer recently and I'm facing an issue for the moment.
I bought all the components new excepts the graphic card (second hand).
I installed that second hand gpu and everything worked fine for 1 week. Then the computer refused to start up. I realized that the problem came from the graphic card. So I bought a new one, a GTX 1070 TI. Everything was working fine till today. The computer started normally this morning and turned off by itself right now. I tried to restart it but the graphic card has burned (flame on soldering from the psu gpu side). Then I removed the graphic card and everything restarted perfectly. I would like to get your opinions about that because Im wondering if the problem has been caused by the power supply unit or by the graphic card itself. I took a picture of the graphic card, you will find it below. What would you do if you were in my position. Would you send the graphic card in warranty or would you investigate further first psu side ? I'm a little bit lost in front of that. I fear to replace the gpu and burn it again (already 2, but I'm not sure that the one I bought in second hand had no problem at the beginning).

 

[Dark Lord of Tech]

Specs?

 

[x4v11]

i7 8600k
gygabyte z370 hd3p
2x 8go ram
ssd samsung 850 evo 250
psu be quiet pure power 600w
msi gtx 1070 to armor 8g

 

[jankerson]

The GPU is wasted and the PSU is questionable for anything now so it would be mandatory to get a new one.

Best thing to do now would be to shut down the PC and unplug it from the power until the new PSU comes in.

 

[x4v11]

I will try to send both in RMA. I took a picture of the gpu. What do you thing? Does it came from the psu? What for gpu warranty?