So today I made my first ever build and I was ecstatic to see it run when I turned it on. Unfortunately, the monitor wasn't able to pick up a signal. I removed my gpu (RTX 2070) and and now the pc is able to get a signal. The computer is brand new so it doesn't have anything installed (not even windows). Is this only happening because I need to install the OS first then maybe install the software to support the gpu? Or is this because I got a bad gpu? Thanks for any help in advance guys.