The laptop I’ll be using to demonstrate this is a beloved old Samsung Ultra from 2014. It shipped with Win 8 and 4 GB of memory, and ran nicely. But Windows 10 did not play well on it, until I ...

Now none of the major laptop manufacturers, including Dell, Alienware, HP, Acer, Asus, allow it. As a result, it's rare to find a laptop that will allow you to upgrade its CPU.