It could be a faulty connection eg damaged ribbon cable etc or it could be a software fault.
Initially I would try deleting and reinstalling my cdwriter software ie Nero or Easy CD Creator and see if that does the trick.
Regarding the diskette I don't know what you mean, you can get CD rom diskettes with some drives but a computer running windows doesn't need them as it uses a Microsoft driver from windows. Windows treats a CD Writer as a CD rom and therefore you shouldn't need any floppies. I'm on my third CD writer now and mines a lite-on too a 16x I never got a disk with it and have never needed one, perhaps someone else can help with this.