I have a HP dv9500z with the same issue as here;
I have had several laptops that came with Vista and now during a clean install of Windows 7 the DVD/RW drive does not show, just learned of the reg. edit & the F8 quik fix, I want to delete the filters but in my reg. they do not show just did another clean install Win.7 Ult. same thing, see my reg.;
Mine--> [url]http://img197.imageshack.us/i/ds8a1p.jpg/[/url] (#ds8a1p)
Is there a fix for this I don't think there is a firmware/driver for ds8a1p DVD drives.