my computer isn't recognizing my phone and syncing to iTunes
I don't know what happened, but my computer doesn't recognize my phone and won't sync to iTunes. Whenever I plug in my phone to my computer, it charges it and asks if I want to trust this computer and then that's it. I followed the troubleshoot stuff but it doesn't seem to work because under the USB thing the Apple Device thing isn't there. I'm not really sure what to do. I'm not sure if maybe the USB portal in my computer is broken or what it is. I'm hesitant to uninstall and reinstall iTunes because I don't want to lose all my music. Any solution and advice?
iPhone 4S, iOS 7.0.3