plz riot fix this error plz

dear riot, i played two game with an error... the error was...i can not see minimap,item,information,time,tab....there was just screen and chatting screen...some how, I could saw chatting....at first game i thought it was just an problem with computer but in second game the error occures again... so i tried to quit the game and reboot the computer when I come back to the game, there was so much time was gone and enemy was fed..so we lose but i can't play with out minimap things like that...after the game i got leaverbuster..shit....plz riot fix this bug and plz turn off my leaverbuster...