when i connect my iPhone 5s to my PC itunes does not recognise it so I cannot back up
When I connect my iPhone 5s to my PC iTunes does note show my phone and I cannot back up. Itunes is up to date and it used to work before.
iPhone 5s, iOS 7.0.6
http://support.apple.com/kb/TS1538 gives steps for troubleshooting device not recognized.