GTX 1080 DIed OR NOT?!

[diagnosticcc]

Hi guys, i recently start having pc problems, one day i switched on my pc and suddenly when i fired up wow game, the screen starts to flicker, i opened msi afterburner to see the temperatures, and they were skyrocketing to 100+ degrees. I switched off the system, reseated the pc and nothing... black screen fans spinning, mobo no rgb lights. I thought that this might be the motherboard dead, so i bought the new Asus B350-i Am4 Motherboard, when i plugged everything back together, the same story, but this time the mobo led start flashing on ddr4 ram, so i call overclockers and send back the memory, they replaced it with brand new one, now when i build up back the system, pressing the power button, nothing just the mobo rgb starts, no fan spins, no nothing(btw i bought psu tester and tested the psu, didnt show any problems). Now i reseated everything still nothing, so i did unplug the graphic card and the system started, fan spinning rgb on the mobo, everything, Unfortunately, i don't have spare pc to plug the gpu to it, so i can't possibly check if it's bad mobo pci lane or graphic card died as well. Btw when i returned the old motherboard the seller tested it and said that there is nothing wrong with the board.
My PC PARTS ARE:
Asus b350-i MOBO
t-force vulccan ddr4 2x8gb 3000mhz ram
Nvidia gtx 1080 hybrid evga
ryzen 7 1700 cpu
coolermaster 240 liquid cpu cooler
550w 80 gold plus PSU on superflower
M.2 SSD KIngston 240gb
Things i done:
Reseated everything
tested the power supply with power supply tester
reset the bios
Plus plugged in speaker, didn't beep at all!
Should i return the gpu to be inspected?

 

[hang-the-9]

It's not likely to be the motherboard. Could be the video card, especially with that temperature issue. Can you test the system with a spare video card? If you can't test the card in another system only thing you can try is to replace it and see if that works.

 

[diagnosticcc]

It's not likely to be the motherboard. Could be the video card, especially with that temperature issue. Can you test the system with a spare video card? If you can't test the card in another system only thing you can try is to replace it and see if that works.

 

[diagnosticcc]

I have tried new graphic card, still nothing! By close inspection i saw that when installed the m.2 ssd on the top of the mobo there was 6 pins wich i damaged. If that the problem i will have to deal with asus terrible rma.... will post more updates! Btw the seller for the last motherbord said the item was working perfectly so now i don't know what caused the system not to boot in the first place...