Lets try the obvious first! Try restarting! Then try unplugging the cable's from the drive and then plug back in and boot up and try to open. Try using the little button on the face of the drive. You have to use a paperclip or sopmething. If that doesnt work then try going to 'my computer" and right click and press eject or just double click on the drive and it should say "insert disk" and it should eject.