Problems when playing football manager

Hi all,
Just wandering if anyone can help, This only occurs when playing football manager, My screen suddenly starts flashing and shows lots of different lines (See picture below)





It is very random as to when it does it and when it happens i can't get it off, the only way is to completely restart, i have upgraded my graphics drivers etc, Could this be my graphics card? or is it a problem with my screen. I am running on Vista and my laptop is more than capable of running this game. If you need any more info just ask.
Thanks