My computer became corrupted, and I reinstalled windows, only to find my iphone will no longer sync with the same computer. How do I sync my phone and tones to the same computer without losing everything?

Question

This is my first time using this forum, and I apologize if my post isn't "normal" or if my question is too long. My old acer computer had become corrupted and I had to reinstall my copy of windows. When I tried to sync a new ringtone to my iphone, which was only ever synced to this same computer, I was prompted to delete everything I had so I could install one ringtone. That does not sound ideal, and I refuse to delete everything I've put on my phone and my data to sync to itunes. There has to be another way to show my phone that this is the same computer. So I do not have to go through the hassle of doing everything again. I could not find an answer in the forums, and hope you can help me. This is pretty close to being a deal breaker for me. I'm beyond frustrated with this policy.
I don't believe it matters, but I'm running the latest version of itunes, as of today, and I have an iPhone 4 CDMA iOS 7.4.

Answer 1

Thanks, Lawrence. I figured that was what I was going to have to do in the end. I have a few games with quite a few hours invested, and I worry that I'll lose the progress I have as they do not save to the cloud. I may have to bite the bullet, and just take the plunge to resolve this. I just want a way to easily transfer my "Home Computer" for my iPhone. My laptop is years old and in need of being replaced, and it's about time to upgrade my phone. These life events piling up are making me consider switching to a friendlier OS. I'm not using this as a threat. I just hope some apple high up will read this, and realize that we need alternatives. Life happens.
Thank you both Paul and Lawrence. I clicked "This helped me" not knowing it would remove the option to choose "This fixed my problem" too. For anyone else reading this thread. Using the guide provided has done both. It has helped me and given me a fix to my current problem. Lawrence has also provided me with the last bit of information I feel is missing from wjosten's guide. That syncing will completely erase all of your data and reinstall it in one fell swoop. It's a great fix. Even if it isn't the exact one I wanted. Thank you again!