freez

Hey Guys My laptop Acer Aspire 5745G is experiencing some freezing problems, it freezes randomly, like when starting up. I tried re-formatting, it does freez when i install the graphic card drivers(downloaded from acer's site)

my computer is freez when i setup my xp after some time its freez one blue screen comes and one short message comes i check my hdd to other computer its working. examining 76317 mb disk 0 at id 0 on bus 0 on i m very confused what can i do ? if u know plz help me