I managed them both to get to work now, it was the power cable problem i used for second GPU. Bought new one and it works now. But now i got another problem, my MoBO stupidly using second GPU as a MAIN PCI E ( its in pci express x1 slot AND below the first gpu ). So i cant realy use the PC for gaming now or anything else. Can i change that or no? i guess there could be an option in BIOS or nvidia control center to make this happen? or should i try to use my second gpu in other PCI e x1 slots? ty for all the help

I just got two MSI GTX 1050 TI grafich cards, i was curious if i can make double GPU mining using my PC just to see. I can boot pc up with one GPU installed and start mining with NiceHash miner, wasnt hard to test that out. After i use PCI express Riser ( i connect it to the MB, I connect 6 pin power and also i power up my Riser with Molex cable ). So i know everything is set up the wey it should be. My PSU is 550 W so it should be enough. When i boot it up both GPUs get the power ( fans spinning & LED turns on ). But i get no signal on my screen , i tried putting my HDMI cable into other GPU also and still no signal. MB gives me one BEEP that everything is OK. Im using http://www.gigabyte.com.au/Motherboard/GA-MA770-ES3-rev-10#ov this motherboard with latest F4 bios updates. Does it mean i should try this in other MB or what? Ty for the help.