Hello, I see that you are a new colleague on the forum and you may not have learned to use the tool. Or don’t learn to be pasciente yet.
Even though this is not the place to answer your question, here’s your answer:
http://forum.mikrotik.com/t/is-it-possible-to-install-7-0-beta-on-an-x86-server/139340/18
You can also use furum search which will also find a solution to your problem.
Be welcome