HP uses different brand DVD/CD burners. HP,Lite-on and Toshiba/Samsung just to name a few.
Mine had the Toshiba/Samsung and I had the same problem
that you are having. I went to the Samsung web site for the latest upgrade. Even though it didn't say Vista I downloaded the latest one and low and behold my burner started working.
HP advertises "Vista Ready" and yet they send out computers and peripherals that won't work with Vista?
As for their tech. support, good luck unless you get someone in the USA or Canada and then that is not a guarantee they will get it fixed.
I cannot get the unit to burn a dvd directly as designed. HP says on dialogue that they are working on the problem and will let me know when the issue is resolved...by that time, the warrantee will be up!
Any clues? It will burn if routed through windows 9...go figure! Mike