Problem with asrock Z77 extreme 6?

[it_profesionalac]

Hi.
I have Z77 extreme 6 motherboard and CPU is i5 3570K.
I have a problem. For example; My PC is in standby mode, when i press any key or move my mouse, my PC leave standby mode.
This is normal. Now i watch my desktop background but after few seconds my PC again go out in standby mode. When i exit standby pressing the any key and when i watched mu desktop backgorund i MUST press any key on keyboard, would not again appeared stand by.
Where is the problem? Thanks.

 

[it_profesionalac]

anyware suggestion? Do u understand me? If u not understand me, sorry for my bad eng

 

[Xttony]

So what you are saying is that your computer automatically leaves standby state?
Go to bios and set the wake up by LAN to disabled.