My iPhone won't connect to my PC or iTunes?

I recently forgot my password for my iPhone 4 and it became disabled and asked to connect to iTunes, I had plugged it into my PC (Windows 7) and it didn't pick it up at all, neither did iTunes, it will however charge, not plugged into my PC but into a wall adapter using the cord I used to plug into my PC, so I know the cord isn't a problem, and the iPhone's port isn't malfunctional. It is a Sprint CDMA version. I have tried putting it into DFU, and Recovery mode on multiple computers, no change. I have also considered taking it to a Sprint store, or an Apple store, but hopefully I won't have to take it to that extent, if anyone could help me I would really appreciate it!

Go to my computer, devices, (Name of iPhone), double click it and then itunes should notice it. Failing that call Apple support.