Originally posted by Falro the Great:

Your laptop should have an "Fn" key that you can press with F5 to make it actually input F5, otherwise usually it'll do the behavior you described (i.e. a laptop-specific function).

Remember that you also need to add "-console" to the launch commands for the game in your Steam Library.

thank you soooo much i really could not figure it out for the life of me :)