How do I open a project from a USB?

I made a cool looking project this paste summer while i was at ID Tech camp and i would like to know how to open that project from my USB to my PC and work on it.

I did that and the project did not open it even said it was opening the project but only thing that opened was the starter spawn screen with the wooden block and the stars
this

It should just work, as long as you can read and write in random access from any drive it does not matter for UE4 on where it runs the project, it matter only for loading and saving times and how much free space you have there. So place it in USB drive and just run uproject.

OK i found on how to load the map up thx for the help