Uninstall everything! Delete the install folder and the Electronic Arts folder in your documents. Restart your computer. Reinstall the base game and patch it to 1.67 (https://help.ea.com/en-gb/help/the-sims/the-sims-3/the-sims-3-super-patcher/).
Try to launch the game.
If this works then try to install your EPs one at a time, in the order suggested here: http://www.carls-sims-3-guide.com/technicalhelp/installorder.php
I know EA says it doesn't matter what order you install them in but I can assure you it does!!!
Make 100% sure you have automatic updating off in Origin and in the launcher at all times! You do not want to update to 1.69!!!