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Order your Game Ready PC by Monday 23rd December for Christmas Delivery

Building your own desktop PC might seem daunting, but it’s more accessible than you think—if you can use a screwdriver and follow simple instructions, you’re ready to go. Like assembling flatpack furniture, the process is straightforward, and you get the added satisfaction of customizing your build to suit your needs.

This guide provides the context to help you select the right components and assemble them into a functional, mainstream gaming PC. While no guide can cover every situation, you’ll gain the essential knowledge and confidence to tackle your build and tailor it to your budget or preferences.

 Interior view of a gaming PC case with labelled components, including the PC case, case fans, CPU cooler, RAM modules, SSD bracket, power supply unit (PSU), and a GeForce RTX graphics card.
 Interior view of a gaming PC case with labelled components, including the PC case, case fans, CPU cooler, RAM modules, SSD bracket, power supply unit (PSU), and a GeForce RTX graphics card.
A modern black computer case with vertical front ventilation grills and RGB-lit cooling fans visible through a tempered glass side panel. The case is elevated on small feet and showcases two large front fans with colorful lighting effects

The PC Case

  • Look for good airflow, compatibility with your motherboard (ATX, Micro-ATX, Mini-ITX), and space for all components.
  • Case used in this guide: CIT Slammer
A black MSI PRO H610M-E motherboard displayed alongside its packaging box. The motherboard features a compact micro-ATX form factor, with visible PCIe slots, RAM slots, and a CPU socket. The packaging has a sleek gray design with the product name and branding.

The Motherboard

  • Ensure it supports your CPU socket, RAM type (DDR4), and GPU size.
  • Motherboard used in this guide: MSI Pro H610M-E


A blue box of Intel Core i5 12th Gen processor packaging. The box features the Intel logo,

The CPU and CPU Cooler

  • Choose a processor based on gaming performance and budget.
  • Many CPUs come with a stock cooler.
  • CPU used in this guide: Intel Core i5 12400F
  • Cooler used in this guide: Stock Cooler
Two Kingston FURY Beast DDR4 RAM modules in black with a sleek, angular heat spreader design. The modules feature the

The Memory Kit (RAM)

  • RAM affects system speed. For gaming, 16-32GB is ideal.
  • RAM used in this guide: Kingston Fury Beast 32GB DDR4 3200MHz
A Kingston NV2 1TB PCIe 4.0 NVMe M.2 SSD with a blue circuit board and a white label displaying the product details, including the storage capacity and interface. The label includes certification marks and branding.

The Storage: SSDs and Hard Drives

  • SSDs provide faster load times for games and the operating system.
  • SSD used in this guide: Kingston NV2 1TB
A black power supply unit (PSU) with a large cooling fan and a grid-style ventilation design on the front. The PSU has a minimalist, modern design with a small turquoise logo on the corner.

The Power Supply (PSU)

  • Choose a PSU that provides sufficient wattage and is reliable (80+ Bronze or higher).
  • PSU used in this guide: DeepCool PK650D
An ASUS graphics card featuring a dual-fan cooling system with a sleek black design. The card has large cooling fans, a PCIe connector, and visible vents for airflow. The ASUS logo is centered on the fans.

The Graphics Card (GPU)

  • The most important part for gaming performance.
  • GPU used in this guide: ASUS Dual RTX 4060 Ti
A PCIe wireless network card with two large black antennas for improved Wi-Fi connectivity. The card has a small circuit board with a green and blue design and a metal bracket for mounting inside a computer.

Networking

  • Some motherboards don’t have built-in Wi-Fi. Use an adapter if needed.
  • Networking used in this guide: Prevo Wi-Fi Adapter


Operating System

  • Ensure you have the OS ready to install. You’ll need a copy of Windows to get your system up and running.
  • Operating System used: Windows 11 Home USB

Other Tools You’ll Need

A precision screwdriver set displayed in an open black plastic case. The set includes multiple screwdrivers with fine tips of varying sizes, labeled for different types of screws, such as flathead and Phillips. The screwdrivers are neatly organized in designated slots inside the case.

Screwdriver set (a Phillips-head screwdriver is essential)

A rectangular stainless steel magnetic tray with a shiny, smooth finish. The tray is designed to hold small metal tools, screws, or components securely using its magnetic base, preventing them from getting lost during work.

Magnetic tray (to hold small screws)

A blue anti-static wrist strap with a coiled grounding cable and an alligator clip. The adjustable strap is designed to be worn around the wrist to safely discharge static electricity, preventing damage to electronic components during assembly or repair.

Anti-static wrist strap (optional but recommended to avoid static damage)

A collection of black cable management tools, including a bundle of zip ties, two reusable hook-and-loop straps, and a black cable sleeve. These tools are designed for organizing and securing cables in a clean and efficient manner.

Zip ties or Velcro straps (for cable management) 

Step 1: Install the CPU on the Motherboard

1. Open the socket: Lift the small metal lever next to the CPU socket.

2. Align the CPU: Carefully align the CPU so its notches match the socket (it will only fit one way).

3. Place the CPU: Gently lower it into place – no need to force it.

4. Secure the CPU: Lower the metal lever back down to lock it.

Step 2: Installing RAM on the Motherboard

1. Open the slots: Push back the clips on the RAM slots.

2. Align the RAM sticks: Match the notch on the RAM stick to the slot.

3. Insert the RAM: Firmly press the RAM into the slot until the clips snap back into place.

Tip: Make sure the RAM is fully seated – it requires a bit of force.

Step 3: Mounting the CPU Cooler

1. Apply thermal paste: Place a small pea-sized dot of thermal paste on the center of the CPU (if the cooler doesn’t already have it pre-applied).

2. Place the cooler: Position the cooler over the CPU.

3. Secure the cooler: Tighten the screws evenly until snug (but don’t overtighten).

Step 4: Installing the M.2 SSD

1. Remove the M.2 cover: Unscrew the cover or heatsink.

2. Insert the SSD: Slide the SSD into the slot at a slight angle.

3. Secure the SSD: Gently press it flat and screw it into place.

4. Replace the cover: Reattach the heatsink if necessary.

Step 5: Mount the Motherboard in the Case

1. Prepare the case: Remove the side panels for easy access.

2. Install standoffs: Ensure standoffs align with the motherboard screw holes.

3. Install the IO shield: Snap the IO shield into the opening at the back of the case.

4. Mount the motherboard: Carefully place the motherboard into the case and screw it onto the standoffs.

Step 6: Connect Case Cables to the Motherboard

1. Connect front panel cables: Attach power, reset, and USB headers to their labeled motherboard ports.

2. Refer to the manual: Use the motherboard manual to identify correct pins.

Step 7: Install the Power Supply

1. Position the PSU: Place it into the bottom compartment of the case.

2. Secure the PSU: Use screws to mount it.

3. Connect cables: Attach the 24-pin cable (motherboard), 8-pin CPU power, and GPU power cables.

Step 8: Installing Extra Fans (Optional)

1.     Mount the fans: Attach fans to the case (front for intake, back for exhaust).

2.     Connect fan cables: Plug them into motherboard fan headers.

Step 9: Installing the Graphics Card

1. Remove PCIe covers: Unscrew covers in the case where the GPU will go.

2. Insert the GPU: Push the card into the PCIe slot until it clicks.

3. Secure the GPU: Screw it into place.

4. Connect power cables: Attach any required PCIe power cables to the GPU.

Step 10: Final Cable Management

1.     Organize cables: Use zip ties or Velcro straps to bundle and route cables neatly.

2.     Replace panels: Put the backplate and side panels back onto the case.

Step 11: Installing the Wi-Fi Adapter

A close-up image of the back of a desktop computer showing two black Wi-Fi antennas attached to a network card
A close-up image of the back of a desktop computer showing two black Wi-Fi antennas attached to a network card

1. Plug in the adapter: Insert the USB Wi-Fi adapter into a rear USB port.

2. Ensure it works: Check if the system detects the adapter once powered on.

Step 12: Powering On and Testing

A person using a desktop computer displaying a BIOS/UEFI interface with the Intel® Rapid Storage Technology settings.
A person using a desktop computer displaying a BIOS/UEFI interface with the Intel® Rapid Storage Technology settings.

1.     Turn on the PC: Press the power button.

2.     Listen and observe: Check for unusual noises or lights.

3.     Enter BIOS: Press the BIOS key (usually DEL or F2) and ensure all components are detected.

Congratulations!

If everything is working, install Windows 11 Home using the USB drive. Follow the on-screen prompts, install drivers for your GPU, motherboard, and Wi-Fi adapter, and you’re good to go!

Congratulations! You’ve successfully built your own gaming PC. Enjoy your new rig and happy gaming!