Burner isn't recognized in Vista/Ult

Honestly, I did nothing to my system. At the desktop when I place a blank
CD/DVD in my burner I no longer get the window that asks "Add Files... and/or
Burn CD."

I have gone into the Autoplay options and changed them all to the default
settings. No good. Tried on "Blank CD" the Ask me every time, Using Nero, I
changed the option to Make Data Disc using Nero Express. I could go on and
on. (Incidentally, I do save the option and reboot). Any suggestions as to
how to turn these options on?