restore backup system registry info for older os
also attrib -<r a s or h depending on whats needed or +r to re attrib it)
also extract then cab name and its location and the destination and file needed.
then on newer there is fixboot and fixmbr (like fdisk /mbr)
If you argue with an idiot he will drag you down to his level and beat you with experience.
I am not a fast writer.
I am not a slow writer.
I am a half-fast writer.