How to Download Windows on a New PC | From Blank Drive to Desktop

The process uses Microsoft’s Media Creation Tool on a working PC to prepare a bootable USB drive, which then installs Windows on the new computer.

A new PC without an operating system is a blank slate — all potential, no function. You can download Windows on a new PC using Microsoft’s Media Creation Tool and a USB drive from another working computer. The whole process takes about 30-60 minutes depending on download speed and hardware, and this guide covers every step from start to finish.

What You Need Before Starting

You need a working PC with internet access, a USB flash drive with at least 8 GB of space, and optionally a product key to install Windows on a new PC.

• Working PC with internet — this is your builder machine that runs the Media Creation Tool
• USB flash drive — 8 GB minimum, 16 GB or more is better; the entire drive gets erased
• Windows product key — optional during setup, add it later or reactivate with a digital license
• Windows 11 hardware — TPM 2.0 and UEFI firmware required if you are installing Windows 11

Move any files you need off the USB drive before you start — the preparation process erases it completely.

Downloading Windows for a New PC: The Media Creation Tool

Microsoft provides a free utility called the Media Creation Tool that handles the entire download and USB preparation in one go.

On your working PC, open a browser and go to Microsoft’s official Windows 11 or Windows 10 download page. Look for the section labeled “Create installation media for another PC” and click the Download Now button under it.

Run the downloaded file and accept the license terms. On the next screen, select “Create installation media (USB flash drive, DVD, or ISO file) for another PC” and click Next.

Choose the language, Windows edition, and architecture. 64-bit is the standard for modern computers. If you are unsure, leave the “Use the recommended options for this PC” box checked.

When the tool asks what media to use, select USB flash drive. Pick your USB drive from the list — the tool shows its capacity and drive letter — and click Next. The download starts automatically. Windows installation files are roughly 5 GB, so the download can take 10 minutes to over an hour depending on your connection speed. The tool writes the files to the USB and makes it bootable when the download finishes.

How Do You Boot the New PC From the USB Drive?

You boot the new PC from the USB drive by pressing the boot menu key during startup and selecting the USB drive from the list of available devices.

Insert the prepared USB drive into the new PC and power it on. The critical moment comes in the first few seconds after pressing the power button. You need to open the boot device menu so the PC starts from the USB instead of trying to boot from its empty internal drive. The key that opens this menu depends on the motherboard — Esc, F10, and F12 are the most common. Watch the screen closely for a brief message like “Press F12 for Boot Menu.”

Press that key repeatedly until a menu appears listing available devices. Use the arrow keys to highlight your USB drive — it is usually identified by its brand name and capacity — and press Enter.

You should see a Windows logo with a spinning circle below it. That means the installer has loaded from the USB drive. If the screen goes blank or the PC boots to a “No bootable device” error, restart and try a different boot menu key or confirm the USB drive was created correctly on the working PC.

Run Windows Setup Step by Step

Windows Setup walks you through language selection, product key entry, and drive selection in about 15-30 minutes, with several automatic restarts along the way.

The first screen asks for your language, time format, and keyboard layout. US users can almost always leave the defaults and click Next. Click Install now.

When prompted for a product key, enter yours if you have one. If you do not, click “I don’t have a product key” to continue — you can add a valid key later or reactivate through a digital license linked to your Microsoft account.

Accept the license terms, then choose “Custom: Install Windows only (advanced)”. This is the option for a clean installation. Selecting “Upgrade” instead is a common mistake — it tries to keep old files and settings, which does not apply to a new PC.

You see a list of available drives and partitions. On a brand-new empty drive, a single entry appears labeled “Drive 0 Unallocated Space.” Select it and click Next. Windows begins copying files immediately. The PC restarts several times during installation — this is normal. Let the process run until you reach the personalization screens where you set a username, password, and privacy preferences. Microsoft’s install-from-USB documentation provides additional detail on the boot and partition steps.

What About Windows 11 Compatibility?

Windows 11 requires TPM 2.0, UEFI mode, a 64-bit processor, 4 GB of RAM, and 64 GB of storage — requirements that the installer checks automatically before proceeding.

If your hardware fails the check, the setup screen shows exactly what is missing. The most common solution is entering the BIOS/UEFI settings and enabling TPM, disabling CSM (Compatibility Support Module) or Legacy Boot, and switching to UEFI mode. Once those settings are correct, the installer should pass.

If you are building a PC with components from the last few years, it almost certainly supports Windows 11 — the BIOS settings just need to be adjusted.

Common Mistakes and How to Avoid Them

Most Windows install failures come from a handful of preventable mistakes, all of which have straightforward fixes.

Finish With a Full Update

Running Windows Update immediately after the first boot installs critical drivers and security patches that complete the setup. Click Start, type “Check for updates,” and select the result. Install everything available — this pulls in the latest drivers, security patches, and feature updates in one go. Skipping this step is the single most common reason a fresh install feels unstable.