No Internet connection -- Upgrading Vostro 3700 from Windows 7 to Windows 10

I successfully upgraded from Windows 7 to Windows 10 on my Vostro 3500 computer, but when I tried to do the same on my Vostro 3700 running the very same operating system, I ran into trouble.

On the Vostro 3700 everything in Windows 10 seems to be okay, except I cannot connect to the Internet. To make Windows 7 run properly after a complete system wipe and reinstall, I had to install two network drivers which I obtained from the Dell site. They work in Windows 7, but one will not install in Windows 10.

If the Vostro 3500 can run Windows 10, it seems that the Vostro 3700 should be able to, also.