Active window becomes inactive

when ever i try to do anything the active window become inactive and needs to be clicked on to use it. Is there anything to do about it? I know that it isn't a virus because multiple scans have not found anything. I am using Windows 7 Home Premium and the problem is only recent. thanks

 

Try to restart your computer and maybe you shut down the active effect

 

There is an option with Tweak Ui to stop the stealling of focus.

 

I see there is a version Here