I apologize in advance if this has been answered elsewhere. I have Satellite a105-s2194. The keyboard and touch pad stopped working after I edited my registry to fix my dvd burner. I've tried a usb mouse. It shows up but also doesn't work.I can't do a system restore without a working mouse or keyboard so I'm kind of stuck. I checked the BIOS and everything is as it should be. Keyboard works in BIOS and system utilities menus. Any suggestions would be greatly appreciated. Thank!