Will not load past Mojang Screen

When I press play on the new launcher the Mojang window pops up and the loading bar goes to three quarters of the way and just stops. when I stop the exit out of the window, the launcher will give an option to view crash report but nothing pops up when I click on "View Crash Report." I have un-installed and re-installed several times and i have restarted my computer and made sure everything is updated. Please let me know if you need any other files or info to fix this.