Congrats!
Here is another bit of advice. Go to: http://www.gtopala.com/ and download his nifty piece of freeware (I'm sure he would accept donations!) called SIW (System Information for Windows).
It generates a comprehensive report of your computer that can be saved to a text file. Put that test file in a safe place and if you should find yourself in this position again you can review it for any of those "unknown device" messages you may see in the Device Manager.
Ain't computing fun?!
A favorite site of mine to give you a quick detailed and itemized list of your computer configuration, and all the hardware and software (plus any updates) you are running can be had at: www.belarcadvisor.com. I usually just print it out and put it in the essential file on the computer, and also leave the icon on the desktop to pull up an up to date copy at any time.