Cleaning driver and reinstall the graphic latest driver does help alot in the auto graphic switcher. that even solved my dota prob as well!
Btw now i encountered a new problem that my function key (Fn) is not working with adjusting the Volume, On/off touch pad already... but its weird that the function key still work with adjusting the graphic... i wondering is that because i deleted those Asus software...
Note: I did try to install the touch pad and keyboard driver for windows 64bit but it doesn't work... btw i'm using winds 7 64bit and my pc is A52jc

WOw thanks alot it really helps for "Mute,LCD,Volume.. but turning off mouse pad still shows no respond...