A short video showing my upgrade process for some old office machines. I didn't cover updating the BIOS, bare-metal Windows installation, configuration for out-of-box experience, or cloning. This is just the hardware aspect which is really straight forward and a lot faster than the soft upgrades.
I begin by cleaning the dust bunnies out of the case. Then I install the most RAM and the most capable CPU supported. Those upgrades, plus a solid state drive, make the old PC feel new again.