So last week I was playing smite as usual and all of a sudden my monitor blacks out. I had a few similar incidents happen time from time across 2 years of using this build(specs bellow), when playing games the screen would just randomly freeze and without restarting the pc it wouldn't fix itself. So this time it was the end of gpu. I tried restarting the pc, the whole system works(fans spinning, you can hear the sound of programs turning on) except graphics card, no lighting from led lights or whatsoever. So for the moment im using hdmi cable to connect my monitor to motherboard and everything is working fine. So the question is WHAT WAS THE CAUSE OF GPU FAILURE? Was it the build's fault or the gpu's itself?
Kingston HyperX FURY 8GB 2133MHz DDR4 CL14 DIMM, black x2
PSU Seasonic M12II-EVO620 620W 80 Plus Bronze retail
ASUS GeForce GTX 1070, 8GB GDDR5 (256 Bit), 2xHDMI, DVI, 2xDP
Intel Core i7-6700K, Quad Core, 4.00 Ghz, 8MB, LGA S1151, 14nm, 95W, VGA, Box
SSD Samsung 850 EVO 250GB SATA3, 540/520MBs, IOPS 97K
CPU Cooler Master Hyper 212 Evo
Seagate Barracuda 3.5'' 2TB SATA3 7200RPM 64MB
Gigabyte GA-B150M-DS3H, B150, DualDDR4-2133, SATA3, M.2, HDMI, DVI, D-Sub, mATX
Kingston HyperX FURY 8GB 2133MHz DDR4 CL14 DIMM, black x2
PSU Seasonic M12II-EVO620 620W 80 Plus Bronze retail
ASUS GeForce GTX 1070, 8GB GDDR5 (256 Bit), 2xHDMI, DVI, 2xDP
Intel Core i7-6700K, Quad Core, 4.00 Ghz, 8MB, LGA S1151, 14nm, 95W, VGA, Box
SSD Samsung 850 EVO 250GB SATA3, 540/520MBs, IOPS 97K
CPU Cooler Master Hyper 212 Evo
Seagate Barracuda 3.5'' 2TB SATA3 7200RPM 64MB
Gigabyte GA-B150M-DS3H, B150, DualDDR4-2133, SATA3, M.2, HDMI, DVI, D-Sub, mATX