To begin, mount the SystemRescueCD from the CD-ROM menu and boot into the CD-ROM.
Mount your Windows disk which is /dev/vda2
mkdir hdd ntfs-3g /dev/sda2 hdd –o force
Switch to the config directory of your system,
List all users
chntpw –l SAM
Next, Select "Edit user data and passwords"
Next from the user table displayed, enter the User RID, which would be like 0fXX (Replace XX from your RID displayed)
Next select "Clear/Blank User Password", this will clear out the password from your user.
Unmount the ISO and reboot the system back into Windows and it will login to your machine. From here setup a new password via the control panel.