4- when you get the option to repair the current installation press R to do so ,
5- let it run through and for windows XP wait until it reboots and is installing, devices then
press shift F10 to open a command prompt. For windows 2000 wait until it is registering
components then press shift F10 to open a command prompt. ,
6- In windows XP either type in "nusrmgr.cpl" w/o quotation marks at the command prompt and press enter. For windows 2000 type in "control.exe" w/o quotation marks and press enter. This should open up the user accounts applet in XP and the regular control panel in 2000. ,
7- select the users and change or remove their passwords accordingly, apply settings and close the control panel windows and command prompt windows so that just setup is running again. ,
8- let the inplace upgrade finish.
The user should now be able to log in when it finishes and not have to reinstall the programs like in a parallel install.
To avoid reinstalling your system, the easiest way to resolve the problem is to use some Windows password Recovery program. The program will enable you to reset the password to "Blank" with no -reformatting or installation. Do all the job for you automatically. click here. Windows Password Recovery allows you to reset windows password with with CD!!