Dvdr 1660p1 playback



my philips mt2700 has dvdr 1660p1 dvd
writer but will not play cds recorded on my teac cd recorder even though they will play on computers in work and friends computers the drive plays all commercial cds and computer generated discs it just will not recognise finalized discs but will recognise blank discs i have tried different makes all cd-r i am novice to computing