00% Stuck Loading Screen FIX (After the movies and logos)

Just verify cache of your game.

• 1.- Locate DOOM in your library.
  
• 2.- Right click, then properties.
  
• 3.- Local Files.
  
• 4.- Click on Verify Integrity of Game Cache.

It will take a while, wait until the process is completed, and DOOM may download extra files needed. As for me, it did download an extra 10GB of files.

Some sources report that if you update your video card drivers, it shall fix it. It works for some, it personally did not work for me.

Sources.
https://www.reddit.com/r/Doom/comments/4ctf4x/pc_not_responding_error_stuck_at_00_loading/
https://community.bethesda.net/thread/13911?start=0&tstart=0
https://community.bethesda.net/thread/14167?start=0&tstart=0
https://steamcommunity.com/app/379720/discussions/0/357286119110844460/

To update your video drivers, depending on which card you have. It can be AMD or Nvidia. Not sure about Intel integrated chips.

• AMD: http://support.amd.com/en-us/download
  
• NVIDIA: http://www.nvidia.com/Download/index.aspx?lang=en-us

NOTE: Works as for 03/11/2016. Can't confirm older or newer driver may or would work with this method. If you try, and if you can. Let us know in the comment box if it is stable for you.

NOTE 2 OPTIONAL: You may want to run DDU to uninstall your drivers first before install or re-install any drivers.

DDU link: http://www.guru3d.com/files-details/display-driver-uninstaller-download.html
If you had never used DDU before and want to use it. First check a tutorial, or tell someone you know how to use it. Use it at your own risk.