DVD not recognizing discs
 

Hi , I have a DVD drive ( not a writer ) installed on my computer but it will not recognize any DVD's. It will happily install software and play music CD's on the drive though . Power DVD was supplied with the drive and is installed . It works but no disc is found in the drive ????
Running XP with P4 processor . Do I need anything else to watch DVD's .

Problem solved.....Drive faulty..