I have a 2G 8GB iPod Touch. It is fully recognized and charges on two of my computers, but does not charge and is not recognized on one of my other PCs. Now for a bit of history: It was recognized on my PC for the first week that I had it, but it never charged. After the first week, it was not recognized as well. But it should be noted that it never charged on this PC. However, it completely works on my other PCs, charging and recognition. Now, my PC has USB 2.0, I tried all of the USB ports, but its still not recognizing nor charging on this PC. What can I do? Oh, and this PC is not some 10 year old hunk of garbage. I built it in 2006, and it has full support for USB 2.0.