v2017.2.0f3 not opening

For some reason Unity 2017.2.0f3 editor is not opening. I have tried deleting Temp folder and Library and on a couple of occasions that has worked. But now nothing works. I watch the Task Manager and the CPU usage on the app goes down to 0 and stays there after I have selected the project. I have also re-installed. What the ....

PLEASE HELP