Hi. I have a Sony Vaio Laptop PCG-7164M. It came pre-installed with Vista, but I've been forced to make an XP partition because I have a backlog of work to do with my Avid editing software. The video is recognised but does not playback and results in either a black screen or a still image. The videocard that came in the laptop is a Mobile Intel(R) 4 Series Express Chipset Family. The guy on the Avid forum says that I might be able to play around with different video card drivers, but I'm in over my head on this one. Is there a hotfix, should I downgrade the driver, or will I have to replace my card with a Nvidia one?