I uninstalled my newest version of iTunes for Windows

Question

Hello my name is Wendy Reddy, and I got my iPod nano Model No. A1320 a couple years ago. My computer crashed and I backed up the entire iTunes library and was able to restore it to my computer after I got it running again. However i had to reinstal iTunes due to the system being wiped & reprogramed. However when I tried to upload the disc I got with my original iPod bout 4 years back cause its the only version I really liked, I was asked to update my version of iTunes to the latest 10.1 or what ever it is.. So I did and I didnt have any of my playlists backed up & since the computer crashed I had recorded some pretty important videos on my iPod that I wsn't able to sync with my computer. So when I tried to sync my iPod it said that my entire content on my iPod would be erased and replaced with the updated library which was no longer organized in the playlists I created, as well as all my games pictures and new down loaded songs. But most importantly was the videos I have on my iPod which I CAN NOT LOSE it may very likely have to be used in court for a law suit. So when I uninstalled the newest version of iTunes and uploaded my older version, I couldn't even open itunes anymore cause it gae an error message saying that all the libraries content was upgraded and synced to a newer version and was no longer accessible. I DONT KNOW WHAT TO DO!!!! This is so messed up and I am absolutely infuriated with your company and its shady and sneaky attempts to force people to use the newest versions and then have it destroy lose or corrupt our entire library or force us to lose whatever we have recorded on our iPods! This is absolutely outrageous and fraudulant as well as just negligent & shady business practices. You guys do this so that we ae forced to buy your newer products and in this economy most people CAN'T F'n AFFORD TO DO THAT!!! I feel so cheated and heart broken cause i can't save my video content on my iPod which is dire for my law suit against a corrupt Surgeon who lied to me and misled me about my amputation and butchered me and i am now forced to have a SECOND AMPUTATION and endure this trauma all over agian.
How can I install my older version of iTunes and have it recognize my original library without conflict from the new version which has reformatted my library so I can only view it with the new version. I HATE the new version and want to be able to access my 3000 plus songs and created playlists and sync my iPod with out losing everything I have recorded on it. How can I fix this? This so important and urgent and I if I cant present this video in court I may lose my case against this cruel heartless and greedy ****** up surgeon who took advantage of me when I was already at my worst. i've suffered more than I can even begin to explain without completely losing my mind and I can not afford to lose my record of her negligent actions, it's all I have to prove my case.
Please please help me, I beg of you, please. I thank you for you time and wish you a great holiday season and a wonderful New years... I only hope this new year will be a far better one for me than thie past 7 years, especially this one. Thank you kindly.
Respectfully,
Wendy Reddy
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Answer 1

Many thanks.
when I push the button for the Apple Store the striped download bar just perpetuates with connecting me
In the course of your troubleshooting to date, have you worked through the following document?
Apple software on Windows: May see performance issues and blank iTunes Store