Optiarc DVD RW ad-7561s will not read

I’m running an HP Pavilion DV4 Windows Vista, with the above listed drive. It no longer reads any discs I put in. I can’t think of anything I’ve done to change anything. The device is listed, all the drivers are up to date. I’ve tried unintalling/re-installing, cleaning the drive, the MATS stuff, and a few other options I found on the web. It does spin up, and very occasionally will read something. Any thoughts? Thanks in advance