I just got a new computer (Samsung Chronos 7 with Windows 8). I installed itunes and tried to put some new songs into my iphone but it gives me that "no" symbol when I try to drag a song onto it. The first time I tried plugging my phone to this new computer it gave me a "pairing record is missing" error message in which I learned that deleting the "lockdown" folder would do the trick. That message stopped showing up anyway and when I delete the lockdown folder it just gets worse as I get some weird error code when I plug in my iphone. I already tried reinstalling itunes, using a different USB cord, putting it into a different USB port, stopping some running programs such as ItunesHelper.exe, and other similar program names. Like I said the "pairing record is missing" message is gone but still I can't put any songs on it and usually when I plug in my phone it already starts updating information from the iphone to the itunes, but now it doesn't at all. What are suggestions, because I really need to put songs onto it!