أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
It has happened due to either your installation disc has way too many scratches on it or your USB device has corrupted some setup data. So, to repair it either create the bootable flash drive again or burn the disc again. If this too doesn't help then your .iso file must be corrupted so download it from any other source again.
