Loading screen 0% (CANT ALT TAB, ALT F4, TASK MANAGER ETC)

Never had this issue before where I get stuck at 0% in the loading screen, this was DURING my promos, so I lost those... The team remaked. I couldn't alt+tab, alt+f4, ANYTHING... not even task manager could save me I'm just so %%%%ing sad this happened.. Riot PLEASE look into this. I had an issue similar to this where when the game was over, I couldn't click to close the game, couldn't alt tab etc etc.. This just %%%%ing blows because I KNOW Riot won't look into this or even care, and I know this will happen to me again.
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