The link provided above seems to confirm a more complex operation similar to what I had thought was required. so not only the chipset drivers "have to go," but the video drivers and several other drivers.
I emphasize that the advice above -- don't bother, just do a re-install -- is fairly prevalent among people I know who still work in IT. I may have said elsewhere that I keep a list of software installed on each computer, and try and keep all the install disks or downloaded installation files handy.
That leaves the matter of data. If you don't know the difference between data and programs, well -- you should.
I have automated backup from every computer here to a RAID5 server volume occurring quarterly, or monthly, or weekly -- depending on whether it is "persistent" data that doesn't change, or "volatile" data that does change. This includes everything from personal archives of wordprocessing files, photographs, etc. to "bookmarks" or "favorites" for FireFox or Internet Explorer, e-mail files and archives. That stuff, in turn, gets backed up on a periodic basis.
So, since it's not a question of "emergency" but of "hardware upgrade," those backups still come in handy as I move toward installing OS, drivers, software and data in that order.