well basically, ive had call of duty 4 ages, and never had a problem. i installed it on my new computer, and it ran fine. untill about a week ago. Now, it all works still, untill i come 2 run somewhere. as soon as i try to run somewhere, i suddenly stop - for no apparent reason. its the same with going sideways and backwards. my keyboard works fine (as you can see) but i have no other explanation for it not working like it used to. I havent chnaged any settings, stick keys, filter keys are all off aswell
 
any help? i miss pwning n00bs :'(