I have a new C2D Santa Rosa Macbook pro 2.2Ghz. I have installed Windows Vista Business on it and installed CS:Source, DoD:Source, STALKER & NFS: Carbon. My problem is that all the games keep crashing randomly. Most of the times i get the message that either HL2 has stopped working, or nVidia graphics driver has crashed. I have got a couple of blue screens as well with either MEMORY_MANAGEMENT or IRQL_NOT equal to thing msg. Can anyone help me ?