firstly look in control panel for region and see if you have any changes left you could then just change it to what you want. failing that have a look on dangerous brothers site for a rpc1 firmware for your drive, then the restriction will be in the player software not the drive, failing that install anydvd, this will enable your pc to be fooled that every dvd you put in will be whatever region you choose, so should never give any problems again.