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
Step 1. Put your hard disk of your computer in any other pc .
Step 2. Boot that computer and use your hard disk as a secondaryhard disk (D’nt boot as primary hard disk ).
Step 3. Then open that drive in which the victim¡¯s window(or your window) is installed.
Step 4. Go to location windows->system32->config
Step 5. And delete SAM.exe and SAM.log
Step 6. Now remove hard disk and put in your computer.
Step 7. And boot your computer
