Hi It seems when I put quite a bit of load on the RAM, my PC has been having complete freeze ups. It happened again today when playing Rainbow 6 Lockdown demo. It seems to happen mostly in games, but it's not the graphic card as it has done it with another graphic card in. I thought it could be a problem with the RAM as to boot it back up I have to take the left hand stick of RAM out and put it back in again. So could this problem be the RAM? Thanks Craig.