hi recently ive been geting random freezing mostly while playin games the screen will just freeze it dosnt restart just freezes and when i reboot and go into event viewer there is no errors there all temps seem ok but i had a problem when i tried a 5950 graphics card in it wouldnt run properly coz it says there was not enough power so do u think it could be something to do with my psu thats causing the freezing? any help would be appreciated thanks.