LoL doesn't launch at windows 10, pls help

Yesterday i tried to play League since i hadn't played from the last day, i clicked the desktop icon and it just wouldn't launch, it showed me the logo and then nothing. I didn't give it much attention but today when i tried to play again, i had the same issue! Unfortunately i deleted LoL in order to reinstall it, only now that i install it again it doesnt launch!!! Please help me, this is so frustrating, it just happened like that and i can't use any of the fixes i found online since they require the game to be installed. :(