Question GPU Crashes at any moment i.e in bios or after boot or even just browsing you get the point.

[a29092712k]

Hi! I have two GPUs (Gt 630 4gb MSI and GTX 1080 Ti Lightning X). Both crash at any moment doesn't matter if I am able to boot and run a benchmark or if it's while booting. At times GT 630 fans don't spin unless I pull it out and put it back in while the pc is powered on (with no display), if I reboot the fans stop spinning and it doesn't work. Now I am thinking that this is a mobo issue. I went to a pc shop and the GPU (GTX 1080 Ti) worked till he ran furmark with my PSU because he didn't have one with 3 pcie 8 pin connectors. Yesterday the GPU worked for about 6 hours before crashing and to get the display out of it and get it back up and running I have to reset bios every time. On board graphics work. I would really appreciate any help as to determine if it's the power supply or the mobo causing the issue.

 

[rgd1101]

full system spec? include brand and model of the psu

 

[a29092712k]

full system spec? include brand and model of the psu

Been using this pc for about 2.5 years after the gpu and psu upgrade

had to replace my CPU and mobo about 8 months ago after both stopped working.

Core i7 4790
GTX 1080 Ti (and my older gt 630)
Corsair CS750M
Gigabyte B85M DS3H-A Rev 1.0
32gb Kingston ddr3 1600mhz cl11
2tb Seagate 7200RPM HDD
120gb Kingston sv300 ssd