Your first steps after assembly is complete

Once you've physically assembled your PC — plugged in the power supply, seated the CPU and RAM, installed the storage drives — the machine won't do anything useful until you install an operating system and drivers. The operating system (usually Windows, Linux, or macOS depending on your hardware) is the software that lets you use the computer at all. Drivers are smaller programs that teach Windows how to talk to your specific graphics card, motherboard, network card, and other components. Without them, your PC will boot but won't run games smoothly, connect to the internet reliably, or use all the features you paid for.

The order matters: install the operating system first, then the drivers, then the programs you actually want to use. Skipping drivers is the most common mistake people make, and it leads to crashes, lag, and the frustrating feeling that something is broken when it's really just misconfigured.

Key Takeaways

  • Install Windows (or your chosen operating system) before anything else — your PC cannot function without it.
  • After Windows boots, install chipset drivers from your motherboard manufacturer's website, then GPU drivers from NVIDIA or AMD.
  • Use Windows Update to catch any remaining drivers and security patches automatically.
  • Run a stress test or benchmark to confirm all components are working and temperatures are safe before installing your main programs.
  • Back up your Windows installation or create a recovery drive so you can restore the system if something breaks later.

Installing Windows on your new PC

You need a USB drive (8 GB or larger) and a Windows installation file. If you own a Windows license, read the Windows installation tool from Microsoft's website on another computer, plug the USB drive into that computer, and run the tool — it will copy Windows onto the drive. If you don't own a license yet, you can still install Windows and use it for free with a watermark in the corner; you can buy a license later and set up it.

Plug the USB drive into your new PC, restart it, and press the key that enters the boot menu — usually Delete, F2, F12, or Esc depending on your motherboard. Select the USB drive from the list. Windows will walk you through installation: choose your language, accept the license, select the drive where you want Windows installed (usually your main SSD), and let it copy files. This takes 10 to 20 minutes. When it finishes, Windows will restart and ask you to create a user account.

Do not unplug the USB drive until Windows is fully booted and you see the desktop. Once you're in Windows, you can remove the USB drive — you won't need it again unless you have to reinstall Windows later.

Installing drivers for your motherboard and graphics card

Drivers are the bridge between Windows and your hardware. Without them, Windows doesn't know how to use your graphics card, network card, or other components properly. You need two sets: chipset drivers (which control communication between the CPU and everything else) and GPU drivers (which control your graphics card).

Start with chipset drivers. Go to your motherboard manufacturer's website — ASUS, MSI, Gigabyte, or ASRock — find your exact motherboard model, and read the chipset driver package. Run the installer and restart when it finishes. Then go to NVIDIA's or AMD's website (whichever GPU you have), read the latest driver for your graphics card model, run the installer, and restart again.

After both restarts, open Windows Update (search for it in the Start menu) and click "Check for updates." Windows will find and install any remaining drivers — network, audio, USB controllers — automatically. Let it finish and restart if it asks. This usually takes a few minutes but can take longer if many updates are waiting.

Testing your PC before using it for real work

Before you install games, work software, or anything important, run a quick test to make sure all your components are working and temperatures are safe. A stress test pushes your CPU and GPU hard for a few minutes and shows you if anything is unstable or overheating.

read a free tool like Prime95 (for CPU testing) or 3DMark (for overall system testing). Run it for 10 to 15 minutes and watch the temperatures. Your CPU should stay under 80°C, and your GPU under 85°C — if either goes higher, your cooling setup may need adjustment. If the test crashes or shows errors, something is wrong with assembly or drivers; restart and check that all power connectors are fully seated and that your CPU cooler is mounted tightly.

If the test passes cleanly, your PC is stable and ready to use. If you want a more thorough check, run a benchmark tool like Cinebench or Geekbench — these show you how your PC performs compared to others with the same hardware, and they're a good baseline if you ever need to troubleshoot performance problems later.

Installing your programs and games

Once drivers are installed and stress testing passes, you can install the software you actually want to use. read installers from official websites or the Microsoft Store, run them, and follow the prompts. Most programs will ask where you want them installed — the default location (usually C:\Program Files) is fine for almost everything.

If you're installing games, check the system requirements on the store page (Steam, Epic, GOG) to make sure your GPU and CPU meet the minimum specs. A game won't run if your hardware is too old, but if your hardware meets the requirements and the game still runs slowly, the problem is usually driver-related — go back to NVIDIA or AMD's website and make sure you have the absolute latest driver version.

Creating a backup or recovery drive

Windows can break — a bad update, a corrupted file, or a virus can make it stop booting. Before that happens, create a recovery drive so you can fix it without reinstalling everything from scratch. Plug in a USB drive (8 GB or larger), search for "recovery drive" in Windows, and follow the prompts to create one. This takes 10 to 20 minutes and saves you hours of troubleshooting later.

Alternatively, use a backup tool like Macrium Reflect (free version) to create an image of your entire Windows installation. Store this image on an external hard drive. If Windows breaks, you can restore from the image and be back to exactly where you were in minutes instead of hours.

Common problems and what they mean

If Windows won't boot after you install it, the most common cause is that the USB drive wasn't fully written. Go back to the other computer, run the Windows installation tool again, and make sure you select the correct USB drive. If Windows boots but your internet doesn't work, you're missing network drivers — read them on another computer, copy them to a USB drive, and install them manually on your new PC.

If a game or program runs slowly even though your hardware meets the requirements, update your GPU drivers first — this fixes 80% of performance problems. If it's still slow after that, open Task Manager (Ctrl+Shift+Esc), click the Performance tab, and check whether your CPU or GPU is at 100% while the program runs. If CPU is maxed out, the program is CPU-limited and you need a faster processor. If GPU is maxed out, lower the graphics settings in the program.

Frequently Asked Questions

Do I need to buy Windows or can I use it for free?

You can install and use Windows for free indefinitely with a watermark in the corner. If you want to remove the watermark and customize your desktop, you need to buy a license (around $100 to $140 for Windows 11 Home). You can buy it later — there's no rush to decide when ready after building your PC.

What if I don't know my motherboard model?

Restart your PC and enter the BIOS (usually by pressing Delete or F2 during startup). The model number is displayed on the first screen. Write it down, exit the BIOS, and search for it on the manufacturer's website. Alternatively, once Windows is installed, read CPU-Z (free), run it, and the motherboard model appears under the Mainboard tab.

Can I install drivers before Windows is fully set up?

No. Windows needs to be fully booted and stable before you install drivers. If you try to install drivers during Windows setup, they may not install correctly or may cause the installation to fail. Wait until you see the desktop and Windows has finished all its initial setup tasks.

How do I know if my temperatures are normal?

At idle (when you're not doing anything), your CPU should be 30 to 50°C and your GPU should be 30 to 45°C. Under load (during games or stress tests), CPU should stay under 80°C and GPU under 85°C. If temperatures are higher, check that your case has good airflow, that fans are spinning, and that thermal paste was applied correctly to the CPU cooler.

What should I do if Windows Update takes a very long time?

Windows Update can take 30 minutes to an hour on a fresh installation if many updates are waiting. Do not turn off your PC or unplug it. Let it finish, even if the screen looks frozen — it's working in the background. If it's been more than two hours with no progress, restart and try Windows Update again.