I keep being disconnected from internet while i play lol. Happened in my last 2 games. Looks like after 5 minutes of game i just get dc'ed on my pc (other pc still have internet connection) and have to wait for 5 minutes before i get it back, I reconnect, and this happens again 5 minutes later. My internet is fine, ping is around 50-70 usually.
Also google shows that this is a problem from 2012. http://forums.euw.leagueoflegends.com/board/showthread.php?t=649644 In that thread I found no solution.
UPDATE. In case, someone from the future will have same problem.
Maybe I found a solution (at least it works on my 2nd account).
1. get CCleaner and make a clear.
2. Press Windows key, write "cmd" and run it as administrator.
now digit the following:
netsh winsock reset
netsh int ip reset
netsh firewall reset.
Not sure which of the two made the job, so try them both.