How to Reset Forgotten Password on Computer
How to find computer password quickly that I forgot computer password? Can anyone help me reset forgotten computer password? Any helps will be appreciated! – Now check the following ways on reset lost computer password!
Firstly, use password prompt function on password  locked computer
If you  have set the prompt option when you set account password, it  may help you  remember something about your forgotten computer password!
Secondly, reset computer password with default administrator account
Once we  install Windows OS, there will be automatically generated an  “Administrator”  account with blank password. Therefore, if we forgot  password on computer, we  can have a try:
a. Boot  system, and press Ctrl + Alt + Del keys twice when the  Windows login screen comes up.
b. At  the Classic Login window, input: Administrator and keep Password box null.  Then press Enter key to login.
c. Recover  computer password by: Control Panel – User Accounts.
Thirdly, find computer password with computer password reset disk
If we created this computer password reset disk before we forgot   password, we can opt for the disk to help us unlock password  efficiently.
a. Click  OK and close the message box on the password incorrect prompt window.
b. Click “Reset Windows Password” and insert the password reset disk.
c. Do as the “Password Reset Wizard” to create a new password.
Fourthly, change computer password with Windows Installation Disc
Take computer Windows XP as example:
a. Start computer using Windows XP Setup CD.
b. When it asks to repair our current Windows installation, choose  “Accept”  it and press “R” to run the repair. Then computer will begin  to  repair our Windows and copy files to hard drive.
c. Setup will reboot system. Please don’t press any key when there is “Press  any key to continue…”
d. Now computer will do other tasks and there will be a progress bar   displayed. Please notice carefully the details shown at the bottom of  screen.
e. Once “Installing Devices” comes up, press keys: Shift+F10.  Input:  nusrmgr.cpl and press Enter key at the Command Prompt window.
f. The same “User Accounts” window will display as it is in Control   Panel. Choose “Administrator account” and select any account listed to  change  or remove your computer password.
Fifth, break computer password by DIY a password recovery disk
If the above four  methods still can’t help us reset lost computer  password, we can refer to this  way now. DIY a password reset disk after  forgotten computer password means that  we burn an .iso image file from  Windows password recovery software into a  bootable CD/DVD/USB disk.  Now, take one of the top-rated Ainorsoft Windows  Password Recovery  Corporation as example:
a. Download and install Ainorsoft Windows Password Recovery Corporation in any accessible computer (not from computer you want to unlock)
b. Burn an ISO image file to CD/DVD/USB Flash  Drive
c. Set locked computer to boot from  CD/DVD/USB Flash Drive and set the BIOS Setting for CD/DVD/USB Flash Drive.
d. Reset  forgotten computer password to default Re123456.
The above ways on forgotten computer password reset are the collections of best bet for us to unlock lost computer password! So even if we forgot computer password, things will be OK soon!
source: http://www.windowspasswordrecovery.net/article/forgot-computer-password.html

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