C- PC Playground Guide

The short version — tap a section to open it.

Hi, I'm Jason — a dad, and a longtime IT industry pro. These days I'm also watching my son dive into Roblox: coding his own games, scripting, animating — and lately getting curious about the hardware side of things, which happens to be my corner of the industry.

When I started in IT (a few years — okay, decades — ago), the classic entry-level credential was the A+ exam. It wasn't graded on a curve, so an "A+" score was never actually required to pass, despite the name. That stuck with me, and it's where "C-" comes from: a much friendlier, watered-down version of that material, built for growing minds — not a grade on your work.

Finish a module here and you'll get a certificate, but it's not an official credential — just a fun little token from me to say "nice job." I hope you (or your kid) have fun poking around and pick up something real along the way.

— Jason

Building a computer is a lot like following a recipe: parts go in a certain order, and each one clicks or screws into place. This is the quick version of the guide — for the full lesson behind it (the "why," not just the steps), see the Hardware Class.

Ask a grown-up to build with you, especially the first time. And a quick tip: wear an anti-static wrist strap when you're handling the parts — it keeps tiny static shocks from damaging them.

1. Get the Case Ready
  1. Take the screws out of the side panel and set it aside.
2. Put In the Power Supply
  1. Line it up with the screw holes in the case.
  2. Screw it in.
3. Set Up the Motherboard
  1. Put on your anti-static wrist strap.
  2. Gently set the CPU into its socket, matching up the little marker — it should drop in with almost no pressure. Never push it.
  3. Close the cover over it and lock the lever down.
  4. Add a small dot of thermal paste on top (skip this if your cooler already has some).
  5. Set the cooler on top, line up the screws, and tighten them evenly.
  6. Plug the cooler's fan cable into the motherboard.
  7. Push each RAM stick straight down into its slot until the clips click shut.
  8. Lower the motherboard into the case and screw it onto the little standoffs that hold it in place.
4. Add the Drives
  1. Slide the hard drive into its bay and screw it in.
  2. Slide the optical (CD/DVD) drive into its bay from the front and screw it in.
5. Add the Cards
  1. Line up each card (network, wireless, graphics) with its slot on the motherboard.
  2. Press down evenly until it clicks fully into place.
  3. Screw its little bracket to the case.
6. Hook Up the Cables
  1. Plug the big power cable into the motherboard.
  2. Plug power cables into your drives, and your graphics card if it needs one.
  3. Connect the data cable from each drive to the motherboard.
  4. Connect the tiny front-panel wires — power button, lights, USB, audio. Check your case's manual for which pin is which.
7. Close It Up and Plug In
  1. Put the side panel back on.
  2. Plug in your monitor, keyboard, mouse, and network cable.
  3. Attach the wireless antenna, if you have one.
  4. Plug in the power cable — and you're ready to turn it on!

That's it — you built a computer!

→ Try it yourself in the interactive build

→ Read the full Hardware Class lesson

→ Test what you learned (Junior Quiz, 12 and under)

→ Take the 13+ quiz and earn a certificate