I can't rid of ask.com homepage?

My little cousin was trying to download minecraft on my computer (without my permission) and he jacked up my browser. He downloaded java which hijacked my web brower and made it ask.com and now it won't go away. I uninstalled both java and ask.com from my computer programs and i went to my chrome settings and got rid of ask.com default brower but its still there. Ask.com is the first homepage to come up and if i make another tab it is google ran and shows all my most visited web pages (like it is normally). Obviously i'm missing something, can someone please help me get it off my browser for good? It is the most annoying thing ever and i want it gone!