Method 1: Crack Windows 7 password by Safe Mode with Command Prompt
According to Wiki, Safe Mode is a diagnostic mode of a computer Operating System (OS), a special way for Windows to load when a system-critical problem interfering with normal operation of Windows. If you are not able to boot your computer in normal mode or supposed your notebook is infected with Trojans or malware, you are able to get rid of them with Safe Mode. Furthermore, it is easier and safer to reset windows 7 password in Safe Mode when you lost or forgot Windows password.
Windows 7 there are 3 different types of safe mode: Safe Mode, Safe Mode with Networking, and Safe Mode with Command Prompt. Below is a guide on how to bypass Windows 7 password with Safe Mode with Command Prompt, which allows you to bypass Windows password with command line. Detailed steps are as follow:
Step 1. Boot or reboot your Windows 7 computer.
Step 2. Press F8 to enter Advanced Boot Options before the Windows 7 loading screen appears.
Step 3. Choose Safe Mode with Command Prompt in the coming screen, then Press Enter.
Step 4. Wait for Windows 7 files to load until Windows login screen comes up.
Step 5. Log in with an administrator account when you see logon screen.
Step 6. A Command Prompt appears.Type net user in the Command Prompt and then hit Enter. All Windows user account names will be listed for you.
Step 7. Type net user ‘Alina 123′ and hit Enter.
Step 8. The new password has been successfully reset when the command is completed successfully.
Step 9. Log on your PC with the new password.
Note: ‘Alina’ is your locked Windows user account name. And ’123′ means the new password you want to reset for the locked account.
Whenever you need to log on to Safe Mode, an administrator account password is necessary. So it is highly recommended you to write Windows password down and sotre it or creating a Windows password recovery disk before lost/forgot Windows password.

Method 2: Bypass Windows password with Windows Password Unlocker
However, if you haven’t created a password reset disk and forgot all administrator account password, it’s better for you to bypass Windows 7 password with windows 7 password recovery software. Steps as follow:

1. Download Windows Login Recovery and install.
2. Create a bootable USB or CD  with password program.
3. Set computer boot from password disk and boot computer from windows 7 password reset disk.
4. Hack forgotten password with the software. When Spower password program launch, select an administrator account and reset its password.