Iphone 4s and 5 not syncing with Itunes

Question

Please someone help me. I am having the same issue with my iphone 5 and my daughters iphone 4s. We are using Windows on Asus newer laptop. We are on the most up to date versions of Windows and itunes. When you plug into computer and it connects to itunes, it says that the phone needs to be restored. When you try and restore it, it gives you an error. I then take it to anyone who has a mac to restore it, bring it back to our computers and try again. This time, it will recognize it but when you try and sync the music, it will go through steps 1-4 and then the bar with the music will instantly go back to no audio on it. I have tried the process several times and it does the same thing. When I take it to the apple store, they say it has to be an issue with my pc because it restores fine on their mac. Help!

Answer 1

I finally got iTunes to sync with my iPhone 5
I followed the step by step instructions in this archived support article:
Archived - Mac OS X v10.6: iOS device not recognized in iTunes after restart
http://support.apple.com/kb/TS3540?viewlocale=en_US&locale=en_US
If the issue remains, try these steps:
Disconnect the device and quit iTunes.
In the Finder, locate iTunes in the Applications folder and drag it to the Trash. (This will not remove any of your iTunes media or your iTunes library.)
Choose Go > Go to Folder. Enter the following location into the text field that appears:
/System/Library/Extensions
Click Go.
Locate the file "AppleMobileDevice.kext" and drag it to the Trash.
Restart the Mac.
In Finder, click the Go menu and then choose Go to Folder. Enter the following location into the text field that appears:
/System/Library/PrivateFrameworks
Click Go.
Locate the folder "MobileDevice.framework" and drag it to the Trash.
In Finder, click the Go menu and then choose Go to Folder. Enter the following location into the text field that appears:
/System/Library/LaunchDaemons
Click Go.
Locate the file "com.apple.usbmuxd.plist~orig" and drag it to the trash. (Do not move the similarly named "com.apple.usbmuxd.plist" file to the Trash.)
Restart the Mac.
Download iTunes and reinstall it. Test to see if the issue persists. Then, restart your Mac a final time to confirm issue is still resolved.