One or two times i got riven to run fine. Now no matter if I select 640x480 or run in native resolution when I boot it up the image has large blocks that are randomly place all over the place. And it's impossible to beable to navigate around even the file menu.

I have an nvidia graphics card and I've played around with the options and updated the driver. I will try completely uninstalling and reinstalling seeing if that will help. But could use some advice in the meantime.