How to "Delete Windows 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 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 secondary hard 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 :-)