Question Need help knowing what could be causing this

[Hotshotq]

https://imgur.com/a/lOJxT2r

View: https://imgur.com/gallery/lOJxT2r


I just rebuilt my computer in a smaller case, and everything was fine until I opened rocket league, the screen looked like a checkerboard with weird lines. It restarted and all of a sudden it’s like my graphics card died. Everything was normal until rocket league started.

 

[Hotshotq]

Also, it takes a little bit longer to post now.