hello guys please help me.i have compaq presario f700 latop with window vista sp2 . i just wanna play pes 15 on my laptop which has dedicated memory 64mb n i change into 128mb n my total avilable graphics memory is s decrease into 700 mb.but now i change my dedicated memory into 64mb but my total avilable graphics memory is 700 but not change before i change into 128mb .can u help me to bring my defualt total avilable graphics memory.