Which version of Vista? How much RAM? What brand and model number? Why were you upgrading your video driver? There should be no reason to do so unless you were having problems.. Tried using System Restore yet? Scanned for spyware using something like the free program below:
SUPERAntispyware Removal Tool
Hope this helps and let us know more.
my computer. then it dumps the physical memory. It does this and various times... this time when trying to upgrade my video driver....