B360m-hdv problem with graphic card

Hi, I got a b360m-hdv mb to update my pc. Everything works fine except for the graphic card, a gtx960 that i already used before. If i connect my monitor to the gtx960, i can't get video signal, while connecting to the mb, i can. I already tried to change settings in BIOS without success: pcie express is primary graphics adapter, igpu multi monitor is disabled, still can't get to use my graphic card. I also tried another graphic card from my brother but can't use this one too. Here's my complete setup:

Asrock b360m-hdv
Intel i7 8700
16gb ram
Gtx960
256gb ssd
1tb hdd

Thanks to whoever will try to help me