champion select / and client bugged

every time i go afk leaving my client open for a minimum of 5 min my client buggs and i dont know its bugged till i enter a queue. when i enter queue and champ select pop's up half of the champs are missing from the selection screen and the spot where there portrait should be is just a black square. then the timer and bans and picks dont show up for ex #1 the timer stays at 40 sec and dosent count down #2 i see the name of the first ban but not the portrait then it dosent show any thing els #3 i cant see picks and when its my turn i cant tell so im just trying to click my champ aka morg but she was blacked out so i used the search to refresh the champ pool list and its so laggy that i cant even type "morg" then i get kicked from queue and have to restart my client cos its bugged out and have to w8 60 min cos it happened 3 times in a row

P.S if it happens agen i will update this thread with a screenshot

P.S P.S riot plz hlp me. if any 1 els is having this issue plz let me know in a reply to this post

fyi i love this game riot and id rlly like to enjoy it agen with out this bug

                                                                        ty for taking the time to read my post hope you can let me know y this is happening soon.

      see you on the rift :P