G53SX-a1 Display mode button not working in Windows 7 64bit

[amedhat]

Hello
I've recently downgraded my laptop from windows 10 to windows 7, i found out that 2 of the 3 buttons near the screen are not working
so i reinstalled the power4gear and ATKpackage and 2 of 3 buttons are working fine now but still the button changing the display mode is not working
can any one help me to fix this?
my laptop is G53SX-a1and it is running windows 7 64bit

[C4RN1]

Reload Asus Splendid Utility

http://dlcdnet.asus.com/pub/ASUS/nb/Apps/Splendid/Splendid_G53SX_Win7_64_Z1020031.zip