Hi, this is the downside of the write protection filter, please attach a keyboard to the USB 2.0 port (USB 3.0 ports don't seem to work without the drivers) and press F8 before the OS gets going. Then you'll be give various options including a Samsung System Restore, with care this should re-image the system and fix the problem. BTW, the first time the write protection filter is turned off you need to reboot the system before making changes or you'll a long disc scan etc. Unfortunately, I don't know of any other way out of this problem but, the good news is get easier to resolve the more times you have to run this fix.