Error 7 iTunes helper won't install correctly
My iTunes recently (~2 weeks ago) uninstalled itself from my computer (PC running Windows 7). When I go to reinstall it, it tells me that I need to verify that I have "sufficient privileges" to install iTunes. So, I run the iTunes installer as an administrator and click ignore on the "sufficient privileges" window, then it tells me that iTunes has installed and I can click finish to exit the installer. However, as soon as I click finish, it gives me this error:
"iTunes helper was not installed correctly. Error 7 (Windows Error 193)."
I followed the instructions here (delete all Apple programs from your computer, make sure your computer is fully updated, then restart your computer and run the iTunes installer). It still gave me the same error. What can I do to successfully reinstall iTunes on my computer?
Note: I also made sure that Microsoft NET was not the problem (as it was here), but when I went to install the newest version of NET, it told me it was already installed and it didn't give me the option to repair it.
Please tell me how I can make sure iTunes helper correctly installs so that I can reinstall iTunes. Thanks.
Dell XPS 14Z-OTHER, Windows 7