Pointer for mouse not showing..

My last real game, everything went ok until my battery died during champ select and my computer shut down ('have to run off ac power until the new one arrives). I was in champ select at that time, and it started the game with me disconnected. When I rebooted and reconnected, it had me in the game, and everything worked, but now my pointer is gone. The green x appears when I click on a place to move to, but there's no arrow to show where I'm clicking until I do. I've tried reinstalling after apologizing to the people on my team, but that didn't fix it (I went into a custom me vs 1 bot game and have the same issue). What do I do at this point?