Check in Windows Device Manager if DMA is enabled for the IDE controller in which your DVD burner is attached to.
You can find updated firmware for your Sony burner here (YYS6 is the newest):
Before installing the new firmware, make a backup of your burner existing firmware using LtnFW tool.
You can also use in your drive Liteon's 1635S firmwares. You can find then here (YSOW is the newest):