Assuming that you have forgotten your Windows password and don't have a reset disk or another administrator account to sign in with, you can use a Linux boot CD to reset your password. This will work on any version of Windows, including Vista, 7, 8, and 10.There are a few different methods you can use to reset your password with a Linux boot CD. The most popular and effective method is to use a tool called Kon-Boot. Kon-Boot is a piece of software that allows you to bypass the password prompt and login to your account without knowing the password.Another method is to use a Live CD, such as Ubuntu. With a Live CD, you can boot into an operating system that is running off of the CD. From here, you can launch a terminal window and use the chntpw utility to reset your password.If you don't have a Linux boot CD, you can create one by downloading a Linux ISO and burning it to a blank CD or USB drive. Once you have a bootable Linux CD or USB drive, simply boot from it and follow the instructions above.Resetting your password with a Linux boot CD is a relatively easy process. However, it is important to note that this method will only work if you have an administrator account. If you don't have an administrator account, you won't be able to reset your password and you'll need to create a new account.