You're graphic chip is below specs. You need at least 128 MB of dedicated memory, you only have 64 MB
Try lowering your graphic settings and turn off mirror reflections.
Also update your graphics driver. They are outdated.
It is weird that you have to reinstall the game to open though.
What do you mean by when I minimize the laucher it closes ? Does it crash ?
You can also try the factory reset described in this post: http://answers.ea.com/t5/The-Sims-3/FAQ-Troubleshooting-Steps/td-p/714/
When I minimize the launcher it appiers on the tool bar for like two second the dispiers as if I had closed it, the if I click anywhere to open the game (Orgin, Desktop shortcut, or in the Games section) nothing happens... But I´ll try your suggestions and let you know if it worked!
