Opening HPDVD 840xWriter

vbimport

#1

1.My HP DVDWriter840x does play homemade DVDs in Windows Media Player 10, but does not open or play commercial DVDs.
2.In tryingto finish burning a Lightscribe disc,all steps register EXCEPT the final"detecting Media" stepe in which error is"“disc in Lightscribe is not recognized”. Any SOLUTIONS?