Windows operating systems allow you to set up an
administrator password, which prevents unauthorized users from downloading
applications and making system changes without your permission.
If you have forgotten your administrator password, you can
reset it easily and create a new one that you can use to log into Windows.
Since Acer Aspire computers use Windows operating systems,
resetting your password is a simple process you can accomplish in minutes.
Restart the Acer Aspire. When Windows boots up, select the username you want to
reset the password for and press "Enter."
Click "Use your password reset disk" to launch the
password reset wizard.
The password reset wizard enables you to create a new
password for your user account.
Click "Next" on the password reset wizard and
insert the password reset disk.
Click "Next."
Type your new password in the "Type a new
password" box and type the password again in the confirmation box.
Type a hint to you use in case you forget your password next
time.
Click "Finish" to activate your new password.
Restart your computer and log on to Windows using your new
password.
Reset your Windows password
http://windows.microsoft.com/en-US/windows-vista/Reset-your-Windows-password
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