I guess I just don’t get it.  I want to update my notebook’s video drivers to see if it’ll make some issues I have go away.  I go to the manufacturer’s support web site and type in my Service Tag, which is supposed to narrow down my selections to just the hardware I have, and I get this list of 5 different video drivers for my notebook:

Driver Selection

Driver Selection

Yet the site provides no clues to tell me WHICH driver(s) my specific notebook needs?!?  What is the difference between the “Discrete” driver and the “Switchable” driver??  How am I supposed to know which one I’m supposed to use???