[GAMEPLAY] Left-click not working

So basically, my left click will not work, so I can't attack click move, move minimap with left mouse button, click on shop (have to use P) or click on players to see their buffs and debuffs/items. Yes, I have reinstalled league of legends. Yes, I have deleted input.ini. Yes, I have clicked "restore default keybinds"... nothing seems to work. Only league is affected by this problem. Help would be appreciated.