Just adding my 2p here:
http://driverpacks.net/
Having been asked to sort a 7+ year old laptop out, I found that there were a bunch of devices with no drivers - nowt on Windows Update, and oddly, nothing on the manufacturer's site either; so I tried a few links on the first page - only to find old site full of spam or tolls that need to be purchase.
Driver updating software is a bit of a hit and miss. Most times they find the latest drivers and everything works as it should. Rarely though, they can mess up.