Beginner Guides·12 min read·April 12, 2026

How to Build a PC — Complete Beginner Guide 2026

Building your own PC sounds intimidating but it is actually like assembling LEGO for adults. If you can follow instructions and turn a screwdriver, you can build a PC. This guide walks you through every step from choosing parts to your first Windows boot. No experience required.

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Before you start: Use our AI PC Builder to get a fully compatible parts list for your budget. It checks compatibility automatically so you do not have to worry about whether parts will work together.

What parts do you need?

Every PC needs these 7 core components:

CPUThe brain of your PC — handles all calculations

MotherboardThe main circuit board everything connects to

RAMShort-term memory — more is better, 16GB minimum for gaming

Storage (SSD)Where your OS and games are stored — NVMe is fastest

GPUThe graphics card — most important for gaming performance

Power Supply (PSU)Converts wall power to power your components

CaseThe enclosure that holds everything together

Step-by-step build guide

Choose your parts

Start with your budget and use case. Use our AI builder to get a compatible parts list — it handles compatibility automatically so you don't have to worry about sockets or chipsets.

Gather your tools

You need a Phillips head screwdriver (size #2), an anti-static wrist strap (optional but recommended), a clean flat surface, and good lighting. That is it.

Install the CPU

Open the CPU socket lever on the motherboard, align the CPU (look for the triangle marker), and press it gently into place. Never force it. Close the lever to lock it in.

Install RAM

Check your motherboard manual for the correct RAM slots (usually slots 2 and 4 for dual channel). Line up the notch and press firmly until you hear a click on both ends.

Install the CPU cooler

Apply a pea-sized dot of thermal paste to the center of the CPU (if not pre-applied). Mount the cooler according to its instructions and connect the fan cable to the CPU_FAN header.

Install storage

For NVMe SSDs: remove the screw from the M.2 slot, slide the SSD in at a slight angle, press down, and screw it in. For SATA drives: connect both the data and power cables.

Mount everything in the case

Install the I/O shield (comes with the motherboard), then mount the motherboard with the provided screws. Connect the power supply cables: 24-pin motherboard power and the CPU power connector.

Install the GPU

Remove the PCIe slot covers on the case. Slide the GPU into the x16 PCIe slot until you hear a click. Secure it with screws and connect the PCIe power cables from the PSU.

Connect case cables

Connect the front panel cables (power button, reset button, USB headers, audio). This is the fiddliest part — refer to your motherboard manual for exact pin locations.

First boot and Windows install

Connect your monitor, keyboard, and mouse. Press the power button. Enter the BIOS to verify all parts are detected. Then install Windows from a USB drive.

Common mistakes to avoid

Forgetting the standoffs: The brass standoffs that go between the motherboard and case are essential. Without them your motherboard could short circuit.

Not connecting the CPU power cable: The 8-pin connector near the top of the motherboard. Easily missed, and the PC will not boot without it.

Putting RAM in the wrong slots: For dual channel, use slots 2 and 4 (or A2 and B2) — check your manual. Wrong slots mean half the performance.

Overtightening screws: Snug is enough. Overtightening can crack a motherboard or strip threads.

Need help choosing parts?

Our AI builder generates a fully compatible parts list for any budget in seconds — no technical knowledge needed.

Get your parts list →