I am getting the following message

iTunes.exe – Entry Point Not Found

The procedure entry pointAVCFPlayerAppliesMediaSelectionCriteriaAutomaticallyKeyCould not be located in the dynamic link library

AVFoundationCF.dll.

That one can be produced if you have an older version of Apple Application Support on the PC than is required by your current iTunes version. (The required version of Apple Application Support is included in the standard iTunes installers, but for some reason it hasn't been updating properly for some folks, for iTunes version 11.1.4.62 and possibly 11.1.5.5.)

So, let's try updating your Apple Application Support to version 3.0.1 by doing a standalone Apple Application Support install.

Download and save a copy of the iTunesSetup.exe (or iTunes64setup.exe) installer file to your hard drive:

http://www.apple.com/itunes/download/

Download and install the free trial version of WinRAR suitable for your PC (there's a 32-bit Windows version and a 64-bit Windows version). If the following link takes you to the WinRAR home page rather than the WinRAR downloads page, click the Downloads header in the box at the left of the WinRAR home page to see the trial version downloads:

http://www.rarlab.com/download.htm

Right-click the iTunesSetup.exe (or iTunes64Setup.exe), and select "Extract to iTunesSetup" (or "Extract to iTunes64Setup"). WinRAR will expand the contents of the file into a folder called "iTunesSetup" (or "iTunes64Setup").

Go into the folder and doubleclick the AppleApplicationSupport.msi to do a standalone AAS install.

Does it install properly for you? If so, can you launch iTunes without the error now?

If instead you get an error message during the install, let us know what it says. (Precise text, please.)