Can't reset windows 10? - 1

I bought a Windows notebook for university because our CAD program is only available for Windows, but the previous owner only deleted the data but did not reset it. All passwords etc. I received but the system can't be reset. Around 50% report a problem and ask about other options. Can someone help or explain if there's a kind of hard reset like with smartphones?

What does not work exactly? How far can you get

You could download Windows to a USB stick and write down your Windows key. Then reset your hard drive and reinstall Windows