Hi andrew592,
Welcome to the HP Forums!:smileyhappy:
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
i grasp you are unable to log into your computer with your fingerprint or your password.
Here is a ink to Cannot Logon to Windows with SimplePass Fingerprint Reader
Heree are some links to assist you with this difficulty.
Using Microsoft System Restore (Windows 8)
Refresh Your PC to Resolve Problems (Windows 8)
Performing an HP System Recovery (Windows 8)
With the recovery option, during the process you will receive a prompt to backup your personal files to prevent data loss. Here is a link on how to restore them if you choose to do one.
Restoring Files that were Backed Up Using HP Recovery Manager (Windows 8)
I hope this helps.