hi guys , im trying to upgrade my sony vaio VGN-BX396VP, from XP to wondows 7 ,but it gets to 77% and says ( windows cannot access the installation source,verify the installation source are accessible, and restart the installation ), any 1 help me out iv tryed a couple of windows 7 disc same thing, any 1 help me fix me little problem or is it big problem :Laugh: thanx .