hi every 1 i have a sony vaio laptop model vgn-fz180e/b it has c2d 2ghz 4gb ram 200gb hard drive at 4200rpm the gpu iz 8400m gt with 256mb dedicated memory n has a bluray drive so its FULL HD n iz runing original windows vista.....now the problem iz that i m un able to play 1080p HD movies on it 720p works fine i hav installed k-lite codec but nothing i have media player classic n kmplayer.....my friendz pc which has a built in vga n 1gb ram plays it but he has windows xp.......now i was thinking to update my driver but gpu driver is only provided by sony & they have no updates the other thing is my hard drive rpm which are very low....so plz guys help me out.....thanx.