There are many situations when we have to delete administrator password if we forget it or if for other intention.There is a simple trick to delete administrator password without using any software.Just follow this and we'll be successfully deleting the administrator password.
1)Boot up with DOS
2)Delete the sam.exe and sam.log files from Windows\system32\config in your hard drive.
3)Now when you boot up in NT, the password on your built-in administrator account which will be blank (i.e No password).
This solution works only if your hard drive is FAT kind.
1)Put your hard disk of your computer in any other pc .
2)Boot that computer and use your hard disk as a secondary hard disk (Don't boot as primary hard disk ).
3)Then open that drive in which your window is installed.
4)Go to location windows->system32->config
5)Delete SAM.exe and SAM.log
6)Now remove hard disk and put in your computer.
7)Boot your computer the password on your built-in administrator account which will be blank (i.e No password).
Author Credit : Priya Gupta