Method 1: Reset Forgotten Windows 7 Password from Safe Mode
Windows OS has a default administrator account created during Windows installation. By default, the built-in administrator account is named Administrator and has no password in it. But Windows 7 usually has this account disable, you need to enable the account before. If forgot Windows 7 password, try to follow this tip.
Step 1: Start your computer and press "F8" while the computer boots up. The Advanced Boot Options screen appears.
Step 2. Scroll down to "Safe Mode" and press "Enter." Your computer starts in Safe Mode.
Step 3. Click on the "Administrator" account that appears on the Windows logon screen. After entering system, click on "Start" and “Control Panel" to change your other account password.
Method 2: Reset Forgotten Windows 7 Password by Using Windows Password Key
Step 1: Download, install and run this Windows Password Key on a working PC from: http://t.co/x8otIyR14H
Step 2: Prepare for a blank and writable CD/DVD/USB Flash Drive and next insert it to the PC for the purpose of burning the iso image file to it and making it as a Windows password reset disk.
Step 3: Insert the created password reset disk to the target PC and set the PC boot from CD/DVD or USB.
Step 4: Start to reset the forgotten Windows password with the password reset disk in less than 3 clicks of button.