I can't move when the game starts

as title says, i can't move at all!
i can jump,
i can use ctrl,
i can't press any key on the keyboard like g/w/s/d/a/f/r etc..
i can fire with my mouse, i can zoom in or out but i just can't move
it fix itself after few re logins but its starting to get annoying to have to login 5-6 times so the game can work..


i have tried most of the solutions but they did not work, i have disabled avg, i have disabled firewall, even made an exception for the game, i had a program like 'Game Booster' to shut down everything running in the background, still not working..

my windows is up to date, all drivers are up to date as far as i know

this was not happening with windows 7 as i run windows 8 now, and a new HP laptop..

any help please?