After I downloaded the editor and tried to open the player, the error message in the attached picture appeared. (The editor worked fine, though). I tried updating my drivers, but the program still would not open. Desperate, I upgraded to Windows 10, but the same problem still persists.

Any tips? I've updated my NVIDIA driver and installed all the possible updates (Windows Upate and HP Support Assistant etc etc). I don't know if downgrading to Windows 7 is an option at all, since it came preloaded with 8.1, but I would like to avoid that option unless all else fails.