I always thought CPU was another way of saying computer. Please don't make fun of me lol..Anyway, I finally got it to install. After putting the CD in 100 times it finally read it..But, my problem now is that my game runs choppy...Like when I scroll over buttons it takes a while for the button to highlight...My computer is not even a year old yet...I meet all the requirements...I reinstalled windows and updated all my drivers..I never had a problem play any of the previous CIVs when they first came out. When I bought CIV4, it ran perfect on my then four year old laptop...