How to "Delete administrator Password" without any software?

Method 1:

Boot up with DOS and delete the sam.exe and sam.log files from Windows\system32\config in your hard drive. 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.

Method 2:

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 (D'nt boot as primary hard disk ).
3. Then open that drive in which the victim’s window(or your window) is installed.
4. Go to location windows->system32->config And delete SAM.exe and SAM.log
5. Now remove hard disk and put in your computer.
6. And boot your computer:-)