My Windows 10 Computer Locked

You need a windows password. Go to another computer and create a windows account if you don't already have one.

FYI, you can avoid using/creating a Windows Live account during Windows 8/8.1/10 setup. After you click "create account" there's some text at the bottom that says "skip this step."

Awesome, I did not know that.

I thought it is a local account password.

You have to click the start button from the list to left. After clicking this then go to Account setting, you get many options but you have to click on sign in options. In this option, you got a password change option where you can change the password. Microsoft will send you a new code to your registered phone number. By this, you can successfully unlock your computer.

I have an old computer with 7 that is almost unusable. It barely opens and lets me start, gives messages that the old system lacks proper drivers, etc., and will not allow most sites to open. I tried a dozen times to install 10, but it starts and stalls. I deleted as much unnecessary content as I could, but nothing helps. I just put it away and got a new one.

Could be that you have a hard drive problems.

I used a program spinrite but it cost an arm and a leg but it have save my rear end countless times over the years.

I don't know. It was not worth so much headache. I retired but saved it.