Try a lens cleaner.
Replace the unit.
There a toss-it item.
Some will work for years....others for minutes.
I have a Ford tech manual on CD that is giving me the hiccups.
It loads (not auto) and everything works, up to the point of actually accessing the information.
At that point it tells me to insert another tech disc.
I talked to the seller (He says he's never had this problem with anyone else.) who sent me two other discs that do the same thing.
I ran the CD on my son's computer and had no problems until I tried accessing the files without the CD in the drive.
Then I got the same response as on my computer.
That tells me my computer is not seeing the disc (It thinks the drive is empty?) for some reason.
"My Computer" shows the disc is there but I can't access the files.
Does anyone know why that might be or have another explanation?
P.S.: It's a brand new CD/DVD player and I can run all sorts of other discs.