You buy a laptop, and cut off some bits you don't like and glue on ones you do. It's a little more refined than that, but essentially all you're doing is part swapping where you weren't supposed to be.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
