Like the title says, I'm picking up my brand new 5k iMac in the morning from Apple! I have my Crucial ram ready to install, hard drive with all my files ready to import, I'm set...or so I think? What should I do when I receive it to make sure everything is working properly, check to see that the screen is perfect, and/or make sure everything is running OR not running properly? I'm buying this myself (my first laptop was a graduation gift) so I want to make sure everything is clear before the return/exchange period is up. Any and all help will be MUCH appreciated!