I have just installed Call Of Duty world at war but when the game starts it runs in slow motion. My PC meets all the specs. Can anyone help me please.

Thanks

Try closing everything else you've got running if there is anything

There must either be some spec that you haven't met or, like albear says, you have too many processes running in the background. Try to eliminate as many startup programs as you can using MSCONFIG (http://netsquirrel.com/msconfig/) and reboot.