Iphone 3g won't connect to itunes/computer

[Laxxz]

Recently I bought my friends Iphone which had 2.2 FW on it.

When I took it home I couldn't get it to charge via my ipod cord or acknowledge that it was connected to the computer in anyway. The odd catch is that it will charge via the same cord plugged into the wall adapter AND, if the iphone is off I can still do things like hold the home button in and then connect the ipod cord which is hooked up to my computer and have the phone turn on. This isn't making much sense to me. I reset the phone to factory defaults from within the phone, and am now in my current situation. I am stuck at my activation screen, I can't connect to itunes because the iphone doesnt show up, no smaller programs like ziphone detect my phone, just a few minutes ago in the car my friend took his iPhone and connected it to the deck in the car via the usb 2.0 hook up and his phone showed that it was charging, tried the same thing with mine, nada. What can I do? Does anyone have any insight into the issue? hardware? software? anything will help. thanks.

[henners123]

Sounds like it could be your computers USB, try testing it with something or use another USB on your comp. Hope that helps

[Laxxz]

I've tried all my USB's along with several on other computers and even my wii.

[henners123]

What OS are you running?

[Laxxz]

Windows XP