iPhone not showing up in "My Computer" or iTunes
1. Reset all iPhone settings
2. Tried all USB ports - they all work with other hardware
3. Used various USB cords to connect the phone and verified that the cords work with other hardware.
4. Connected the phone to another computer and it was recognized.
5. Totally removed and reinstalled all components of iTunes (following Apple support direction)
6. Ran Glary Utilities and CCleaner
7. Turned off Norton anti-virus and firewall
8. ran iTunes diagnostic - everything passed, but phone doesn't show up.
9. after each step, turned phone and computer off and restarted.
Would appreciate any help.
Dell Inspiron 9300, Windows XP