It should start running if you checked Run in the menu. If you checked and still not running is because you have a warning there "Unable to resolve the local rotating region", so there is your problem you need to troubleshoot.
I would suggest first to run some examples from the Tutorial.pdf or Solving Engineering Problems.pdf documents.
In Solving Engineering Problems.pdf chapter 5 is about Rotations.
Have you rant he check tool;
Meshing in flow is very robust, so the check tool might help to identify if there are any invalid contact in the model that are causing the model to fail meshing.
There is also an error about the rotating region on your solver window, if you suppress this does the model mesh successfully?