Update 4/28/2017: After revisiting this computer, I realized that it was not running in turbo mode. So, it's running much slower than it should be in this video.
This is a complete build video of a 386DX/40 MHz PC. I would say that this is a late 80s to early 90s era computer. There is also testing of games after the computer build. The games that are tested are Prince of Persia, LHX Attack Chopper, and Lemmings.
Sometimes in the video, I use the term "Thick" threaded screws and "Thin" threaded screws. These refer to 6-32 and M3 screws respectively.