I know this is a bit off, but it is possible to reset a password before login. I have used the "stick keys" bypass a lot go fix friend's forgotten password problems.
Basically you boot off a live cd replace sethc.exe with cmd.exe. hit shift 5 times and pop admin shell. from there you can create/reset a local admin password.
https://4sysops.com/archives/forgot-the-administrator-password-the-sticky-keys-trick/