How can I fix an error when updating iTunes 12.0.1 version on my Windows Vista laptop (32-bit)?

This is what I got each and every time I tried to update my iTunes to the 12.0.1.26 version. I followed recommendations to specifically uninstall all Apple-related programs from my computer in this order: iTunes, Apple Software Update, Apple Mobile Device, Bonjour and Apple Application Support, restarting and then reinstalling the new version... The error keeps on appearing... and now I do not have any access to iTunes neither can I update my other Apple devices. I have a Windows Vista 32-bit operating system, and everything seemed to be working fine. My other laptop has the same exact operating system, and the updated version ran without any complications. Is there any other recommendations for me?