How to Download Windows 11 on a New PC | USB Install Steps

To download Windows 11 on a new PC, use a second computer to create bootable installation media on an 8 GB USB drive using Microsoft’s official tool.

A new PC with no operating system is just a box of parts until the installer runs. One wrong click can send a build back to the troubleshooting forums for hours. The reliable route uses a second computer and Microsoft’s own media creation tool, writing the full Windows 11 setup to a USB stick. The whole process takes about 20 minutes from boot to desktop.

What You Need Before You Start

A second, working computer with internet access. This machine will create the USB installer. The new PC stays unplugged until the USB is ready.

What Size USB Drive Do You Really Need?

Microsoft requires a minimum of 8 GB for the installation media. An 8 GB drive works fine for the installer alone, but a 16 GB or 32 GB drive costs only a few dollars more and leaves room for drivers or a backup image later. The drive will be completely erased during the preparation, so move any files on it before you start.

The Official Download Page: Starting the Right Install

Everything begins on Microsoft’s official Windows 11 download page. That page hosts three separate tools, but for a brand-new PC, one path matters most: the creation tool that builds a bootable USB.

Creating the Bootable USB Drive — Step by Step

1. On your working PC, open the Download Windows 11 page. Under Create Windows 11 Installation Media, click Download Now.
2. Run the downloaded file. Accept the license terms when prompted.
3. Select Create installation media for another PC, then click Next.
4. The tool will suggest the language, edition, and architecture for Windows 11. Uncheck Use the recommended options for this PC only if you need a different language or edition, then click Next.
5. Choose USB flash drive as the destination media and click Next.
6. Select your USB drive from the list of available devices. The tool warns you it will wipe the drive. Confirm and click Next.

When the process finishes, you will see “Your USB flash drive is ready” on screen. The drive now contains the full Windows 11 installer.

Does the New PC Boot From the USB Drive Yet?

Not by default. Most new PCs are configured to boot from the internal drive first. To change that, plug the USB into the new machine and power it on. Immediately start tapping the key that opens the boot menu or BIOS setup.

From the boot menu, select your USB drive (it is usually listed by its brand name or as “UEFI: [USB Name]”). The screen will go black for a moment, then the Windows logo appears with spinning dots.

Running Windows Setup

1. Select your language, time and currency format, and keyboard layout, then click Next.
2. Click Install Now.
3. If you do not have a product key handy, click I don’t have a product key. You can enter it later from the desktop. Choose the edition of Windows 11 you have a license for — Home or Pro — and click Next.
4. Accept the license terms and click Next.
5. Choose Custom: Install Windows only (Advanced). This is the clean install path.

The partition screen. You will see a list of drives and partitions. If the drive is empty, you will see a single entry labeled Unallocated Space. Select it and click Next. Windows will create the necessary partitions and begin copying files. The PC will restart several times during the process.

Mistakes That Wreck a Clean Install

• Downloading from the wrong site. Only the official Microsoft domain guarantees a clean, unmodified install.
• Choosing the wrong tool. Use Create Windows 11 Installation Media, not the ISO download or Installation Assistant, when building the USB for a new PC.
• Installing to the wrong disk. On the partition screen, make sure you select the target drive for Windows. On a dual-drive system, the extra drive is easy to pick by mistake. Check the size and model number of each drive before you click Next.
• Skipping the boot menu. If the PC boots into an old OS or an error screen, restart and try the boot key again. Some systems need a very fast tap immediately after powering on.

The Sequence That Works Every Time

1. Download the Media Creation Tool from Microsoft’s site on a working PC.
2. Run the tool and select Create installation media for another PC.
3. Choose USB flash drive as the destination.
4. Boot the new PC from the USB drive using the correct boot menu key.
5. In the installer, select Custom: Install Windows only (Advanced).
6. Select the Unallocated Space (or the correct drive) and click Next.
7. Let the installer run. The PC will restart automatically — do not unplug the USB during this phase.
8. Complete the Out-of-Box Experience (region, keyboard layout, Microsoft account).