Can't Play in ranked

Continuing the discussion from Season 3 Launch Issues:

hey all!! Just go KI today with season 1, and I can’t play in Ranked. I have a Alienware 14 Laptop with
I5-4200M 2.50 quadcore,with 8gigs of ram, and NVidia GT 750. Any help will be appreciated for me to
pass the Performance Test I did twice. I get 670-960 with everything off or low as possible. Please Help!!!