Benq 1640 - Won't recognize CD's

All of a sudden my drive won’t recognize CD’s. DVD’s work fine but the CD’s that were originally burned in the drive are no longer recognized. When I put them in another drive in a different computer they work fine.

Anyone able to give me a clue as to what the problem would be?

Thanks

Try some different media… but it seems your laser diode for the cds has gone to Heaven…