The first thing we often do When we lost Windows 7 password is asking a computer expert for help. However, it is only a moment for you forgetting Windows 7 password and it may take you several days to regain access to your system. From now on, don't worry about anything when you forgot windows 7 password. The article will give you some ideas to reset Windows 7 administrator password with USB Drive.
Section One: Reset Windows 7 administrator password with Password reset disk.
Most people usually only know how to create a new user with a strong password or change it. But they don't develop a habit to create a password reset disk for preventing lost password. It is a great and free gift from Microsoft. Click here to learn how to create Windows 7 password reset disk If you ready have a reset disk, please follow steps below:
Step1: Start or restart your computer, insert your USB. In the welcome interface, type the user name that you want to use and a wrong password or leave it blank, and then press ENTER or click OK. It will show you logon failed.
Step2: Click Reset password…… it will show you the Password Reset Wizard. And it enables you to create a new password for your user account. In the Password Reset Wizard dialog box, click Next.
Step 3: Chose the disk which you insert, click Next. Type a new password in the Type a new password box, and then type the password again in the Type the password again to confirm box. In the Type a new password hint box, type a hint for the password or not, and then click Next→Finish, and then try to log on to Windows 7 again when use the new password you just set.
This USB Password reset disk only use in a certain account which you have created before, or it won’t help. So it’s better to create a password reset disk when you add a password to account.

Section Two: Reset Windows 7 administrator password with Windows Password Rescuer run from USB drive
If you haven't created a password reset disk for your account and unfortunately you lost or forgot windows password, see below. I will show you step-by-step guide to do this task in several minutes with USB, without reinstalling system or losing any data.
Step 1: Prepare a 2GB USB flash drive and a computer which you can access to.
Step 2: Download Windows Password Rescuer Personal /Windows 7 password recovery and install it to a computer which you have access.
Step 3: Run the program and burn the ISO image to the USB Flash Drive.
NOTE: This action will make your USB drive be formatted and all your data in it will be lost. You'd better provide one with nothing in it.
Step 4: Use the USB to reset windows 7 password. Before this step, you must set your computer boot from USB. Then start your computer, and you will enjoy the process of resetting the password, it is easy and quick. Don’t worry if you have difficulty to bios setting, you can see more about how to set computer to boot from USB.
The method is easy for a computer newbie and it’s the fastest if you don't have the reset disk. Hope that save your time and money.