Precision 7510: How to set NumLock key off at boot

I just got a new Precision 7510. I have to say it has one of the worst designed keyboards I have ever seen, and I am on my third Precision Laptop. Worst flaw: there is no space between the numbers pad and the qwerty.It is incredibly easy to hit a number instead of, say, Enter or Backspace.

In any case, I am trying to figure out how to have the NumLock key off by default at bootup.  On my old Precision it was a Bios setting. But I checked all the Bios settings on the 7510 and could not see it anywhere.  I am using Windows 10. Any tips? Thanks.