Instal dvdrw patches

I have been having trouble from time to time burning cds. The problem was that it burnt so much of a disc then closed it. The message popped up check that disc is clean or try another brand of disc. This occurred in wmp 11 and Nero. I tried slowing the speed down with mixed results. I then downloaded new firmware for my dvd writer which is a Pioneer dvd109. When I tried to instal this patch I got a message screen popping up with cannot find device. How can it not find the device? :sad:

Just burned an MP3 cd and anything above burning at 8x causes the buffer underrun to fluctuate. The faster I burn the more it fluctuates until at 24 times it runs out of buffer and gives me an error message.