EMR not working

Situation
OpenEMR is broken. Error: unknown column ‘patient_data.fname’ in ‘field list’

OpenEMR Version
I’m using OpenEMR version 4.1

Browser:
I’m using: Google Chrome

Operating System
I’m using: Windows 7

Logs
Did you check the logs? Was there anything pertinent in them? Paste them here (surround with three backticks (```) for readability

Can’t see logs.

Image of error: https://imgur.com/Cxt89Ws