Hey I have a toshiba a 215-s4697 and all of a sudden the sound and the usb and the modem stopped working. i tried to do a system restore in normal and in safe mode and it still didn't work. I also tried to run it through all the virus and malware scans and it did not find anything. so i don't know what is wrong with it now. I need some major help. oh i am running on a vista.