Help please I've somehow deleted the admin account without making another account.
Context: So a friend of mine gave me a Windows 7 laptop and I was able to put windows 10 on it but I lost the charger then Years later, I finally found it. I plugged it in. Try to update it wouldn't update it. Try fixing. It never did fix it. So I reinstall windows. Once I've finished, it asked me a user name and a password. And the username said administrator didn't know the password or user name so I. Found a way to get in, but in the process. I've somehow deleted the admin account and now I cant update or download software. Can't do nothing cause every time I do something. It asks me for the Admin thing. I don't have the account. Please help.