My 2100 was years old, and came back to life after I updated its firmware and put a cd lens cleaner on it. It's an old drive and if firmware/cleaner doesn't cure it then it may be time to move on.
Your post is void of detail about how it fails, so I can't offer much.
Compaq 5000 which I bought used for grandson. Has Yamaha CRW2100EZ installed. Only worked intermittantly when I brought it home several days ago and now just sits there and blinks. Will not open or read. I have used system restored, uninstalled with device manager restarted, etc. but no help. Any advise other than a new cd-rw recorder? Thanks.