Unsuccessful in Completing Series?

I was in my last ranked game for promotion and was winning the game hard. Then, my PC decides to shut off in the middle of the game. I restart my PC, and come back to win that game. I was then greeted by a notification saying I was unsuccessful in completing my series. Even though my team mates understood the issue was out of my control and I was even honored that game, I still somehow "lost" my game because of that 4 minute afk. Thats not fair that players have to start up again at square one just because of something that happened that is out of a player's control over a 4 minute tech issue AFK as well (like in my case). I made this discussion to get some justice for the players trying to climb in rank only to have 1 technical issue ruin their series. There has gotta be a way to fix this problem as I can guarantee you more than half the players who are qualified as "AFK" in game have actually just had a tech issue that was out of their control but still got marked as a person who intentionally left the game. I hope you see this, Riot.