I got this  error while trying to login to HP ProBook laptop.
Whenever I put password I got HRESULT error with 0x8007ffff code
and on the bottom it just says ‘OK’ i press it and it goes back to the login screen.

First option is to use HP recovery tools and try to use recovery/repair CD
Using this option you are in risk to lose your data-Not Good.

Other option is try using some other administrative account. I was able to login with local administrative account , also you can use domain admin.

From logs I found that what is causing the issue is the HP software installed on laptop . I removed all HP ProtectTools related SW.

To be more specific

  • Device Access Manger for HP ProtectTools
  • Privacy Manager for HP ProtectTools
  • Drive Encryption for HP ProtectTools

After reboot you will be able to login with your account.

I read about third option.
You can also login in safe mode and reset user password.