Windows program

hi there everyone im new at this kind of thing so please bare with me, my LG dvd writer is seen in my bios no probs, even in my computer section, im on xp sp3, my windows dialogue box that pops up when you insert a disc no probs with blank cd, music cd, but all of a sudden its not reconising my dvds it just comes up as blank cd, when i try to play a dvd in windows media player it tells me to adjust my settings in display from the control panel, ive heard about lower and upper filters to be turned off but how do you do this as i cant find them, hope someone can help me please

Try using VLC Media player.