I have a Toshiba Satellite L505-S5971 (WIN 7) and all of a sudden when I try to use my USB headsets, I get the message: "USB Drive not recognized." I've tried going into Device Manager and uninstalling the USB controllers and having them reinstalled once I reboot my laptop and it doesn't work. I've tried unplugging it and removing the battery and then plugging them back in and powering on, and that doesn't work either. I've checked for updates and everything is up to date. Can someone PLEASE tell me what else can I do?