I've tried in two PC's with the very same result. I run Windows 10 Home. I did try to run it as Admin - the outcome was the same. No, I didn't Alt-Tab. My system is a Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz with 16MB of RAM. Are you positive the file you've uploaded for us to d/l is OK? Have you tried downloading it on a PC you've never run the game on before, and test it there?