I just installed LoL (league of legends) on my computer. The problem is that almost every time after I play the game, it minimizes all my windows which is really annoying. What is worse however is that afterwards other programs do this as well.

In the internet browser doesn't minimize but it does loose focus. For example when i type it randomly looses focus and i have to click on the browser window again to it registers my typing.

Is there any way to fix this? What can cause such a strange behavior??

In addition this problem persists even after restarting my computer.

I previously thought it was internet driver. I no longer think so this happened right after I started playing the game and seems pretty persistent. Please read the comments for further information.

This pretty much renders my computer useless. Even typing this takes a huge effort.