I have a cd-writer/dvd player that I've used several times to write cds onto cd-r's & cd-rw's (including software, music, & photos) and haven't had any problems. Now when I try to burn a cd it can't detect the cd that I've put into the drive. I've tried several different types of cd's and tried to burn different info but I keep getting the message that says "Please insert a disc into the disc drive". The crazy thing is that it can detect cds/dvds that already have info on them. I use HP Recordnow software. Is my burner broke or am I doing something wrong?