Dear sirs,
I am using Windows 8.1 in my laptop. Working with wireless external Keyboard and mouse with separate dongles.  
If I want to restart Windows on My laptop  the booting procedure will start only after pressing 
any one of the button on the  keyboard of the laptop (Not on external key board). In addition to this problem, Occasionally 
external keyboard and mouse behave unexpectedly. But Pressing any key on the laptop keyboard
returns to normal. Clicking  on any icon on the desktop or  in Windows Explorer with the mouse, Only the  top most  icon will be selected.
Pressing any key on laptop key board at this moment will return the laptop  to the normal condition. What is the cause of this problem? Please help me