FreePBX not on active

Hi, I just joined this forum,
I have a Problemas with the FreePBX Program Activation, can you help me please?
I installed the 10/13/66 version of FreePBX on a dual-core PC with 1 GB of RAM, then, once created the extensions that I need to activate the program, I went to the “Admin” - “System Admin” and I clicked on in the upper right button “Activation”; then you see the activation page, which tells me that the machine is not turned on and that you have to press on the “Active” button to activate it, but when I click, appearance that the page loads, and I get the same page again without to change something. I can not activate the program, how can I do? Thank you all for the help