Just today, my PC has stopped recognizing my PSP with the USB. You still here that noise when it's connected and in USB mode, but when I go to my computer, it doesn't show and I can't access it. I tried using Windows troubleshooter. Did not work. Some random media thing pops up though. Shows pictures from it. But I can't see anything on either of my memory sticks. It started when I had my USB connected to my PSP, then I switched memory sticks and then and there, it stopped working.