Crash

I Join A Rank Game About 1hr Ago, Electricity Went and my Pc shut off on turning it back on to rejoin my game the client took 10mins to open then in joining the game on full load screen failed and didn't even appear as a tab on my windows. i restarted my pc and try to open the client again, the client gave trouble till troubleshoot open to i tried one more time then when the client open it reverted to a old update. Up to this moment i cant get it too finish update. I asked that you check with this quickly thank you.