how do i disable alt + a screen shot

[Miguel_37]

every time i press alt + a i always get a window that makes me select a portion of my screen and it screen shots it

how will i disable it

 

[Colif]

it must be a program you have installed as Alt A does nothing on my desktop

Are you running something called Superb Game Boost? Or Advanced System Care? https://steamcommunity.com/discussions/forum/1/359547436743893774/