Making my first build here, the computer starts up ok but the monitor is not detecting any input. I got most of the components from a friend as he was getting a new pc but took the gpu, hard drive and ssd out of it. I bought all that except a hard drive and Win 10 pro but haven't installed it yet. When I am connecting with a monitor, I connect it with the gpu because the cpu doesn't have a dedicated graphics but nothing comes up. If anyone can help that would be great.
Asrock B365M Pro4
T-Force Vulcan DDR4 16GB (2x8)
Gigabyte windforce 8GB RTX 2070
XPG SX8200 Pro 1TB