Repeated automatic key press in F11 button

Hello,

Hi,
I have Asus X456U laptop with Windows 10 Home OS. Regularly in a few days interval, i am continuously facing a problem in my laptop's F11 key. It suddenly start repeated (may be sticky) functions during my routine works on laptop. Sometimes this problem disappear all at a sudden for few months, but reappear with horrible disturbances. I tried many times with reinstalling Laptop Keyboard driver, ATKpackages, windows trouble shoot, etc. If any idea or suggestion plz help.