I tried installing the beta. I now reply using my tablet as I can't start my system anymore. I've tried many things including various system restore points, hiding asw* sys/exe files by renaming them, safe mode and removing my graphic card using chipset instead. The system now halts after loading sys files. How to completely remove (beta) IS from Windows F8 repair tool command prompt? I should have done a system image before starting to get IS going, but I didn't.