Windows 10: I can't factory rest my brothers old work PC!

My brother used to work in sales for a cell phone company. He had a very nice computer that he handed down to me because he's recently changed jobs. I've factory reset a PC once before, but whatever I try with this laptop, it just simply won't work which basically was just holding shift and restarting pc to open recovery mode. I think it might have been disabled in case it was ever stolen, but we don't know the login or can contact anyone from his old company to help. I'm going to say this is a Windows 10 computer, but I don't know too much about Windows 11 to tell the difference, but knowing

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Factory Rest

I just updated the software on my N95 8GB but now i need to do a factory rest, Will doing the factory rest effect the new software i just updated?

 

Brother Printer exists & works, but won't "Install" - Why?

Check whether I understood you well.
First try: Add new printer, Windows finds printer and loads its own drivers/programme automatically. It wprks but not with the Brother drivers.
Second try: Brother package: failed
I suggest a third try: Add new printer; the printer that I wanted is not listed; continue and see of your model is listed. in the list of printers.
I had difficulties with setting up another Brother printer, and the third try solved it.

 

Unlink an old android phone from my pc

I go thru the suggested steps: Start - Settings - Phone - Unlink this PC.

When I first open the "your phone" screen the old phone is listed. Not sure if the phone listed is suppose to be selectable or not, but my is not. When I select "Unlink this PC" the phone listed is removed. When I select "Add Phone" the old phone still
shows. I have removed the old phone from my Microsoft Account. I have rebooted after unlink this pc but I still cannot remove my old phone.