Win xp. I'm trying to burn a dvd which I have done before, but all of a sudden my cd-rw and dvd-rw drives are not working properly. They will play music, but will not burn. I was getting an error. "drive not accessible / incorrect function". I tried going to properties and under recording, enabling the record button. Didn't work. I tried updating drivers...nothing. I tried uninstall and reinstall...nothing. I did make some progress...I updated the firmware to my Plextor dvd-rw and now I am not getting the error anymore when I try to access it, but I can still not record a dvd cause when I put a dvd into the drive...the drive switches from dvd-rw drive(F to cd-rw drive(F in MY COMPUTER !!! When I take the dvd out and watch my computer...it reads the disc and switches back to dvd-rw. PLEASE HELP !!!