have been useing -r media since buying this drive but today have recieved a 2.4 speed+r disc containing footage of a family event have tried several times to access this but drive (sony dw-u10a firmware 1.1d)wont even see disc .I have contacted my brother who also recieved a copy and his will work in his pc which just has a dvd player installed and his stand alone player .is this a fixable problem(firmware )or is my drive faulty