Make sure you have removed USB flash drivers and other external hard disks before proceeding.
1. Boot the computer from installation disk
2. Press and hold SHIFT key and press F10
3. Enter bootsect.exe / nt60 SYS / force and hit enter key
4. Restart PC.
Note: If it does not work use the command bootsect.exe /nt60 ALL/force instead of bootsect.exe /nt60 SYS /force
NB: To avoid this issue happening, Select forced mode from the menu while cracking operating system
