This same question was asked in Thread750-619634, but I never read a solution. I have reinstalled Windows XP PRO. I have downloaded and updated the Firmware for the model drive I have (WRA-OA40) RW241040. I reboot and try using Windows Media Player 10 to write files to drive, but I keep getting message to insert a writable disc. I tried using Windows XP tool to write to the CDRW, but also get message to insert a writable disc. And YES, I have tried several cd-r and cd-rws that I know are fine.