Lite-on LDW-811S Problem

Okay so my drive has been a pain in the butt lately. It will not burn dvd’s. It burns cds just fine. I have tried multiple brands of media. I have also written to verbatim discs many many times before. Every once in a while
my nero says that it is an illegal disc. It says that even when burning home movies I recorded with my vid cam. Could this also be a nero problem??? Could it just be dirty?? If so how can I clean it??? Or is it time to just buy a new burner?

Your best bet is to get a new one, the firmware does not support any of the current 16X media. Get a new one at newegg for 30.00