Board Thread:Help desk/@comment-90.230.148.241-20130305131956/@comment-9713132-20130305134448

We can't help you directly to unban you - we are not Riot, we are not affiliated with Riot in any way, and we have no way at all to further your request.

Should you find the ban improper and unfair, please use the link below to send in a support ticket:

https://support.leagueoflegends.com/anonymous_requests/new

Note that bans from Leaver Buster happen only after a series regular, frequent interruptions with the game - queue blocks, then suspensions, then bans. As such, I'd recommend getting your computer fixed or whatever appears to be the problem first before playing LoL again - your original account or any made after (should your ban be lifted or not) is at risk of the same problems again.