Method 1: Reset Windows XP Password with Installation CD
Step 1 : Start the computer up with the Windows XP Installation CD in the computer's CD drive.
Step 2 : Accept the EULA when prompted.
Step 3 : Press the "R" button when you are asked if you want to repair your computer system.
Step 4 : Wait for the computer to restart and then come to a screen that reads "Press Any Key to Continue".
Step 5 : Allow the computer to restart the installation process on its own without pressing any keys.
Step 6 : Press the "Shift" key and the "F10" key together when you see "Installing Devices" at the bottom of the screen.
Step 7 : Wait for the command prompt to open and then type "nusmgr.cpl" into the prompt. Press the "Enter" key to enter the "User Accounts" screen.
Step 8 : Click on the account that you want and change the password.
Method 2: Reset Windows XP Password with Ophcrack
Ophcrack is a Windows password recovery cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It has the following features:
- Runs on Windows, Linux and Mac OS X (intel).
- Cracks LM and NTLM hashes.
- Free tables available for alphanumeric LM hashes.
- Loads hashes from local SAM, remote SAM.
- Loads hashes from encrypted SAM recovered from a Windows partition, Vista included.