Re: sims3
@Orac9 Okay, try restarting your computer and running Origin as an administrator. (Right-click on the .exe or shortcut to see the option; having an admin account isn't enough.)
If that doesn't fix it, deleting some files may help. Go into TS3's DirectX installer files, which you should find here:
Program Files (x86)\Origin Games\The Sims 3\__Installer\directx\redist
and delete any files you find with the extension .cab. Then run the DXSETUP.exe (in the same place) as an admin, restart your computer, and try to install again.
If that doesn't work either, let me know and I'll ask for more help. (Thanks @holger1405 for the consult, again.)