Can't start a game.

After champ select, the lol icon does not show and the client immediately says reconnect. When i press reconnect it flashes "Game is still in progress...", but only for few milliseconds and than i am back on the reconnect screen. I played 14 days ago and everything was just fine, but yesterday, I had a problem with booting up my computer. Today the pc is ok just lol can't start a game :(. Something like this has been on forums, but without any solution: https://boards.na.leagueoflegends.com/en/c/help-support/LfftgMp7-stuck-at-reconnect-screen-after-champion-select-wont-let-me-join-game-after-i-click-reconnect?show=flat Please help

edit: Tried to reinstall and still the same problem (both accounts: east and west) , but pbe works fine.