Password cracking:windows

1. Install any operating system in different partition may be Windows NT/2000 or LINUX.
2. Boot the alternate install.
3. From that new operating system navigate to drive where your earlier OS was installed.Navigate to the %systemroot%\System32 sub-folder.
4. Save a copy of LOGON.SCR, the default logon screen saver, anywhere you like. Just remember where you've placed it. or rename the file so you can better remember it by name.
5. Delete the original LOGON.SCR from the %systemroot%\system32 sub-folder. It is not necessary to delete the file if you renamed it, you can leave it there.If there is some problem in deleting it then change the permission and o delete it.
6. Make a copy CMD.EXE in the %systemroot%\System32 sub-folder. CMD.EXE is located in %systemroot%\system32.
7. Rename the copy of CMD.EXE to LOGON.SCR.
8. Shutdown and restart your computer. Boot into the original install means your earlier OS.
9. After the screensaver is initiated, instead of running the normal LOGON.SCR actual screensaver, it will run the renamed CMD.EXE file (which is now called LOGON.SCR), and will actually open a CMD prompt in the context of the local system account.
10. Open the CMD.EXE prompt and type:
11. Net user administrator hjhaahaja.This will reset the local administrator