Windows 7 Wireless keyboard delay responding

[ferasalhafar]

I just bought a A310 Lenove All in one pc win 7. When I first want to use the wireless keyboard to type it doesn't respond untill I have to press the button a few times, then it works fine and then if I don't use the keeyboard for about 15 min the problem happense again.
Is it some kind of settings in win 7, or a hardware failure?

 

[zvit]

Look in Computer devices, open the keyboards, and right click on your keyboard and click properties. Go to power options and uncheck "Allow the computer to turn off this device to save power".