|My USB ports have been working just fine until recently. All of a sudden, as of not too long ago, USB data transfer no longer works at all.|
For example, when I plug in an MP3 player, the device will charge as normal. However, Windows will not recognize it, and I have no way of accessing or swapping files on it. The exact same happens for my cell phone. Every port does this, back and front, and these devices work perfectly on other PCs.
Strangely, however, is that I have 2 other devices plugged in - an external HD and a mouse - and both work fine. However these both came with driver CDs.