The DVD drive could have failed, I think that's a fairly old one.
Some have 2 lasers, one for CDs the other for DVDs. Try a CD and a DVD as tests.
New DVD RW drives (ie Burners) are very cheap if you can't fix it.
Some have 2 lasers, one for CDs the other for DVDs. Try a CD and a DVD as tests.
New DVD RW drives (ie Burners) are very cheap if you can't fix it.