I was setting up a HoloLens 2 device, and after I entered the wifi password, it thought for a second, but then went blank. I waited for a bit, and there continued to be no activity. I knew it was still on because I could change the volume and things, but I was unable to open the start menu or do anything else. I tried turning it off and back on, but I was still unable to do anything. I've tried looking things up, but have found no solutions to this problem.