I installed Call of Duty (original) on my laptop running Windows 7\ 64. The game used to work, but I had to do a new install of Windows and now it will not open after installation. Video driver is up to date. I have tried compatability settings for XP service pack3 but this does not change anything. Multi-player works okay, Single player says to run as administrator, but still will not open. Does anyone have any ideas how to fix this?