You may be unable to log on to Windows 7 in the following scenarios:
- Scenario 1: You recently set a new password for the protected administrator account. However, you do forget password on Windows 7.
- Scenario 2: You type the correct logon password. However, Windows 7 does not accept the password because the system is corrupted.
- Scenario 3: You delete a protected administrator account. Now, you cannot log on to another administrator account.
- Scenario 4: You change a protected administrator account to a standard user account. Now, you cannot log on to another administrator account.
Note To do this, there must be a System Restore point at which the logon was successful.
- Insert the Windows 7 DVD, and then restart the computer.
- When you receive the following message, press any key to boot from CD or DVD
- Click Repair your computer, select the operating system that you want to repair, and then click Next.
- Click System Restore, and then click Next.
- Click the restore point that you want to use, and then click Next.
- Confirm the disks that you want to restore, and then click Next.
- Click Finish, and then click Yes when you are prompted.
- When the System Restore process is complete, click Restart to restart the computer.
- After the computer restarts, click Close to confirm that the System Restore process has finished successfully.
- Use an appropriate method to log on. For example, log on by using an older password, or log on by using another computer account.