I recently upgraded my Sony Vaio sz770n from Windows Vista business to Windows 7 x32 professional. It works great except it keeps saying that there is a problem with my intel graphics driver and the screen will freeze occasionally for no reason. I have looked on the sony website, intel and nvidia and cannot find a graphics/video driver for my computer. The sony site says that there is a video driver from nvidia but there is no file to download. I have also tried to reinstall the old windows vista driver but my computer won't allow it. It says that the driver is not intended for windows 7. I like windows 7 but this problem is super inconvient. Can somebody help me figure this out?