I have owned Prototype 2 for laptop for a year and love it. It was able to run, but slowly because of my laptop being old. I recently built a powerful desktop and tried to play on it. It played after trying to start it a few time and it crashing. I was able to play it fine the first night. After that whenever I even try to start it up, it doesn't even display before crashing. I have tried to reinstall, verify the game files on Steam, and even some fixes online. If someone could get back to me on what is wrong, I would be very pleased.