replaced the starter now car wont do anything ant ideas?

dead battery blew a main fuse because you didn't disconnect the battery before changing starter loose connection at starter loose connection at battery your old starter wasn't bad, hence changing it didn't fix your car. (take the old starter to a parts store and have it tested....its usually free at the bigger stores) Those are my top 5 ideas, it's always good to start with the basics, everybody makes mistakes..... Do you have a digital volt meter to check some things? Also what was the original reason the starter was changed? By "wont do anything" do you mean there is no power anywhere in the vehicle, or..... ? Hope this is helpful