Yesterday, I plugged Samsung m320 in my PC and it saw it and kindly offered if I plugged it in another port it might run faster. I ignored it. I could set my phone to be seen as a storage device. This allowed me to put files on the sd card. But now today I cannot get my pc to recognize my phone. It will charge, but will not see it at all. I am using the same cord I used yesterday. My usb ports are working fine. I have searched to find a solution and cannot find anything. Need help.