For some reason, my usb has been all jacked up lately. I uninstalled a driver for this Midi pad that i use the wrong way, and ever since then it hasn't been up to speed. I got the problem with the driver fixed, but now the USB will not recognize any mp3 players or the midi controller. I tried a flash drive and it works fine, and a digital camera as well. But for some reason, the midi pad and all mp3 players are not recognized. Any ideas on how i could go about trying to fix this? I'm not even sure where to start.