Shutting down with light on the button

[ardoyakubu]

My system hp pavilion sm4 when I shutte down the screen go blank but it still working the light on the key board are on.

 

[smorizio]

efi bios can lock up. take power off the pc from the wall. turn off the power supply wait 20 min then clear the cmos. then make sure the mb has the newest bios.