Solved
The Game Won't Start
I insttalled Sims 4 a few days ago and have been having problems since. When i click on the game shortcut or 'Play' on origin, nothing happens most of the time. The activation UI is visible in Task...
There is a new driver version for your videocard, try to do a clean install.
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Check your hdd if it has any errors.
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You still haven't replied about your AV software.
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Have you tried reinstalling the game?
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Although it's part of Win8 make sure you have ms visual c++ runtime
http://www.microsoft.com/en-us/search/results.aspx?q=visual+c%2B%2B&x=0&y=0
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If nothing helps pm me and I can check your system remotely
