Having trouble reinstalling iTunes to Vista...

Question

So I was having problems with certain components of iTunes working at first, so I completely removed iTunes (meaning deleted the folders and files, and deleted all of the other iTunes applications.) The problem is now when I attempt to reinstall it, it gets pretty far but then this little box pops up that says something along the lines of "Something went wrong with the download package. Please contact your service provider for more information." And then it will undo some of the things it said it was doing.
Then it will show me the final screen telling me that iTunes had finished installing. Here's the problem, everytime I try to open it now Windows Installer opens and it attempts to configure iTunes and then the window just stops and disappears. What's really frustrating is I tried to go into the iTunes folder and open up iTunes.exe and my computer told me I had to have administrator permission to access that folder. Despite the fact that I AM THE ADMINISTRATOR, it still told me I couldn't access it.
So I tried one last time to uninstall everything, but this time when I tried to delete the QuickTime folder it told me access was, yet again, denied and that I had to have administrator permission. And everytime I click the "continue" button it just does nothing and tells me I cannot access my QuickTime and iTunes folders. So I just went ahead and downloaded the program again, and I just had all the same problems. Windows Configure would open up and disappear as usual.
Excuse all of this explanation, but this is really frustrating for me.

Answer 1

Hey JayDizzal,
Thanks for the question. I understand that you are experiencing issues installing iTunes for Windows. The following article outlines the error message you are receiving and a potential resolution:
iTunes 11.1.4 for Windows: Unable to install or open
http://support.apple.com/kb/TS5376
Some Windows customers may experience installation issues while trying to install or open iTunes 11.1.4.
Symptoms may include:
"The program can't start because MSVCR80.dll is missing from your computer"
"iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows Error 126)”
"Runtime Error: R6034 - An application has made an attempt to load the C runtime library incorrectly"
"Entry point not found: videoTracks@QTMovie@@QBE?AV?$Vector@V?$RefPtr@VQTTrack@@@***@@$0A@VCrashOnOverf low@@***@@XZ could not be located in the dynamic link library C:\Program Files(x86)\Common Files\Apple\Apple Application Support\WebKit.dll”
Resolution
Follow these steps to resolve the issue:
Check for .dll files
1. Go to C:\Program Files (x86)\iTunes and C:\Program Files\iTunes and look for .dll files.
2. If you find QTMovie.DLL, or any other .dll files, move them to the desktop.
3. Reboot your computer.
Note: Depending on your operating system, you may only have one of the listed paths.
Uninstall and reinstall iTunes
1. Uninstall iTunes and all of its related components.
2. Reboot your computer. If you can't uninstall a piece of Apple software, try using theMicrosoft Program Install and Uninstall Utility.
3. Re-download and reinstall iTunes 11.1.4.
Thanks,
Matt M.