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Setting up a new PC involves more than just assembling the hardware. One of the most critical steps is installing an operating system (OS) to make your computer functional. When purchasing a pre-built computer, it typically comes with an OS pre-installed. However, if you’re building a gaming rig, setting up a workstation, or simply reinstalling Windows, knowing how to install an OS is essential.
This guide walks you through the entire process of installing Windows OS using a bootable USB drive. By following these detailed steps, you’ll ensure a smooth installation experience, whether setting up Windows 10 or the latest Windows 11.

Before installing Windows, you need to create bootable installation media. Follow these steps:
Download the Windows Media Creation Tool:
Visit Microsoft’s official website and download the Windows Media Creation Tool for Windows 10 or Windows 11.
Run the Tool and Start Installation Setup:
Launch the Media Creation Tool and choose “Create installation media for another PC.” Click Next.
Select Language, Edition, and Architecture:
Choose your preferred language.
Select the Windows edition you want (e.g., Windows 10 Home, Pro, or Windows 11).
Select the 64-bit architecture unless you specifically need 32-bit.
Choose Installation Media Type:
USB Flash Drive (Recommended): This is the easiest method.
ISO File: Can be used to create a DVD or virtual machine installation.
Create a Bootable USB Drive:
Select USB Flash Drive and insert a USB with at least 8GB of free space.
The tool will format your USB and make it bootable.
If you’re reinstalling Windows on an existing PC, backup all your important files before proceeding. Use an external hard drive, cloud storage (Google Drive, OneDrive, Dropbox), or another secure method to prevent data loss.
Plug the USB drive into a free USB port.
Restart the PC and enter the BIOS/UEFI (usually by pressing F2, F12, Delete, or ESC during startup).
Once inside BIOS settings:
Find the Boot Order or Boot Priority settings.
Change the first boot device to USB Flash Drive.
Save and exit BIOS (usually F10, then Yes to confirm changes).
After saving the BIOS settings, your PC will restart and boot from the USB drive.
Press any key when prompted to boot from USB.
Wait for the Windows setup to load.
You’ll be asked to choose:
Language to install
Time and currency format
Keyboard input method
Click Next and then Install Now.
Enter your Windows License Key if you have one.
If you don’t have one, click “I don’t have a product key” (you can activate Windows later).
If prompted, select the Windows edition that matches your product key.
Accept the Microsoft License Terms and click Next.
You have two options:
Upgrade Installation: If you want to keep existing files and applications.
Custom Installation (Recommended for New PC): Performs a clean install by erasing all data.
If you have multiple drives or partitions:
Choose the correct drive to install Windows.
If needed, delete existing partitions (only if doing a clean install).
Click Next to start the installation.
Windows Setup will now begin copying files and installing the OS. This process may take 10-30 minutes, depending on your system.
Once the installation is complete, your computer will restart. Remove the USB drive to prevent booting into setup again.
After the restart, follow the on-screen instructions:
Select Region & Keyboard Layout
Connect to WiFi (if applicable)
Sign in with Microsoft Account or Create a Local Account
Enable or Disable Cortana
Set up Privacy Preferences
Your new installation will need essential drivers:
Windows Update:
Go to Settings > Update & Security > Windows Update.
Click Check for Updates and install available updates.
Graphics, Chipset, and Network Drivers:
Visit your motherboard manufacturer’s website and download drivers.
If you have a dedicated GPU, install the latest NVIDIA or AMD drivers.
Essential Software Installation:
Install browsers (Google Chrome, Firefox).
Download productivity apps (Microsoft Office, Adobe Acrobat).
Install security software (Windows Defender or third-party antivirus).
If you skipped product key entry earlier, go to:
Settings > Update & Security > Activation
Enter your Windows product key.
Enable Windows Defender or install an antivirus.
Set up a System Restore Point for future recovery.
Create backups of important files to prevent data loss.
Installing an OS on a new PC might seem daunting, but by following this guide, you can set up Windows efficiently without any issues. Whether you’re building a gaming PC or upgrading your existing system, a fresh Windows installation ensures peak performance and security.
By keeping your OS updated, installing essential drivers, and setting up backups, you’ll have a stable and smooth-running PC for years to come. Now that you’ve successfully installed Windows, it’s time to personalize your system and start using your new machine!
Don’t forget to explore our previous post: Bill Pay Checklist: Take Control of Your Finances

Denis
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