How To Fix The Windows Bootloader » TweakHound.
These tips helped me salvage my Windows 8 installation.
bootsect /nt60 c: /force /mbr
bcdboot c:\windows /s c:
What these commands do:
Writes a new mbr to c:
bootsect /nt60 c: /force /mbr
( command, /nt60 = use boot code that is compatible with BOOTMGR, / = force dismount, / = write mbr )
( bootsect does to touch mbr, it works on the selected drives…ahem….wait for it…bootsector)
Write a new bootloader to the C: drive
bcdboot c:\windows /s c:
( command, look in c:windows for files, copy files to c: (actually c:\windows\boot) )