Follow the following steps carefully and you will get back access to your machine:
Step 1 Boot any live CD preferred Linux.
Step 2 Navigate to System32
Step 3 Rename Magnify.exe to Magnify.old
Step 4 Find and rename cmd.exe to magnify.exe.
Step 5 Logout, remove DVD, and reboot into Windows.
Step 6 When Windows reboots, click on the ease of access button in the bottom left corner.
Step 7 Type net user to get a list of accounts.
Step 8
To Change Password:
net user username new_password
To Add an account:
net user username password /add
Step 9 Reboot Linux & Fix magnfiy.exe
name magnify.exe back to cmd.exe
Rename magnify.old back to magnify.exe

Leave Like and Rep if you like the tutorial