Sims 4 not running

ok, so it appears it launches for a second, along with an activationui.exe then both close, and nothing happens.

Having this exact issue

What steps have you taken previously?

If you check your Reliability Monitor, is there a corresponding crash report for the failed launch?

There are zero crash reports with this issue. It just doesn't load at all (mouse spins, and nothing happens). 

I have tried compatibility mode. 

I have tried forcing it to windows mode

I have cleaned my registry

I have disabled my firewall

I have removed my anti-virus

I have tried running it from in origin

I have tried a clean install

(and posted my DXdiag here) 

@Kraki02 Could you post your Computer's DxDiag?

To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/

@stargrace Please try a Clean Boot, I suspect that it won't work but I'd rather check it out to be sure. 

Is your install location the default on the C drive or elsewhere? Again, it shouldn't be a factor, but I just want to gather info.

Have you had any issues with the CAS demo, assuming that you tried it?

@EA_David

Install is default on C drive (also uninstalled and re-instlaled just to be sure) - no issues at all with CAS demo, or any other origin games (Sims 2, Sims 3, Sims medieval, Dragon Age, etc). 

Attempted clean boot, no change. 

@stargrace Can you try using a different Windows profile to see if that has any effect.

http://windows.microsoft.com/en-ie/windows/fix-corrupted-user-profile#1TC=windows-7

If you launch the game from within Windows, does that help? Try setting Origin to offline then run the ts4.exe from C:\Program Files (x86)\Origin Games\The Sims 4\Game\Bin

Attempted from 2 new profiles (guest, and guest001) - no change

Attempted from within Windows - no change 

Attempted both of these in offline mode and online mode - no change

Mouse curser indicates it's thinking for about 2 seconds, and then no actions are taken.