Question / Help Recording only records a black screen

[AtomicPrime]

I just got this recorder and set up stuff in the settings but I try test recording but it only records a black screen.
Is there a fix for this? Heres a log https://gist.github.com/628cf515b5e5a4b8e8ddff7586917098

 

[R1CH]

You don't seem to have added any sources. See https://obsproject.com/help for some getting started guides.

 

[AtomicPrime]

You don't seem to have added any sources. See https://obsproject.com/help for some getting started guides.

I figured out on how to make a display and it records but how can I record just the game in a window thats obviously not in fullscreen?