why would you want to plug a PCVR HMD in to a crappy console 

Did you not think to check that before you ordered a HMD 

Or you could just update your OS and software. updates are good they bring new features and fix bugs, you must be mad to want to run and old OS that is not supported anymore maybe you should stop crying on these forms and UPDATE you damn PC

And that would be your HDMI port not your DP port lmao

Im gonna give you a bit of advice, dont buy a pre built