I have a strange situation. I have an HP Elitebook 840 G6. I recently replaced the motherboard with a used one off of ebay due to water damage. I used it for several months, but today my laptop was suddenly locked by Envision Healthcare, which I've never heard of. I don't know what to do. I tried removing the Asset Tracking Number, but to no avail. I can access BIOS, but nothing else. My guess is that the motherboard was previously used within their system, and was detected and shut down due to (to them) suspicious activity. There seem to be no restrictions in BIOS. I really hope I can access my files off the SSD. I'll have to buy an M.2 adapter before I can find out. But does anyone know how to bypass this? Or solve it somehow? A clean windows install? I did have Windows erase and reinstall itself when I received the laptop.