I cant play poxnora I downloaded the instaler again and an error message appears then I downloaded the steam version and it says I need windows 64bit version
Have you tried launching the game in compatibility mode with some older system? Otherwise I believe only @Senshu is able to help here.
there isn't. I had to reinstall windows to 64bit. most games require this so it would be a good idea to upgrade your computer.
thats such a mistake by devs! WOW. that could delete lots of the player base who run the game on some semi-old computer...