Game error

Hi,for a few days I have a problem,when I try to play a game of lol,the game close the window,and in centre appears the face of Ziggs with a code of error.That is happen every time when I try to press any abillity or number.I try to fix the problem,I reinstal the game,and the problem persist,after that I put the game to repair the broken files,and I press the obtion for bad Pc,the problem was resolved for three days,but after that it's start again.After that I unistall the game,because I had enough to make trouble for others.I have laptop Asus i5 with nividia Geforce,and memory of 4GB.I think my antivirus made something but I don't know what,because with a night bofore while I play appears somthing from him,but I don't know what,and after start again the problem,first time was the same. I don't know what is the problem,I hope someone could help me.