Installing Windows 10 can be done by following these step-by-step instructions

Obtain a Windows 10 installation media:

If you have a physical copy of Windows 10 on a DVD, insert it into your computer's DVD drive. If you don't have a physical copy, you can create a bootable USB drive with Windows 10 using the Media Creation Tool provided by Microsoft. Visit the official Microsoft website and download the Media Creation Tool. Backup your data: Before proceeding with the installation, it's crucial to back up all your important files and data to an external storage device or cloud storage service. This ensures that your data is safe in case of any issues during the installation process. Start the installation process: Insert the Windows 10 installation media (DVD or USB drive) into your computer. Restart your computer. During the boot process, you may need to enter the BIOS settings to set the boot order to prioritize the installation media. Consult your computer's manual or look for instructions on the screen on how to access the BIOS settings. Save the changes and exit the BIOS. Your computer should now boot from the installation media. Windows 10 Setup: On the initial Windows 10 setup screen, select your language, time and currency format, and keyboard layout preferences. Click "Next" to continue. Install Windows 10: On the next screen, click on the "Install now" button. Enter the product key if prompted. If you don't have a product key, you can choose to skip this step and activate Windows later. Read and accept the license terms, then click "Next." Choose the installation type: If you're performing a clean installation on a new hard drive or want to remove the existing operating system, select "Custom: Install Windows only (advanced)." If you're upgrading from a previous version of Windows, select the "Upgrade" option. Partition and format the hard drive: If you selected the "Custom" installation option, you'll be presented with a list of partitions on your hard drive. Select the partition where you want to install Windows 10 or create a new partition if needed. Click "Next" to begin the installation process. Follow the on-screen instructions: Windows 10 will now install on your computer. Follow the on-screen prompts, which may include selecting regional settings, creating a user account, and configuring privacy options. Wait for the installation to complete: The installation process may take some time, so be patient and allow it to finish. Your computer may restart several times during the installation process. Set up Windows 10: Once the installation is complete, you'll be prompted to set up Windows 10, including personalization settings, sign-in options, and OneDrive integration. Install device drivers and software: After setting up Windows 10, it's recommended to install the latest device drivers for your hardware, as well as any necessary software. That's it! You have successfully installed Windows 10 on your computer. Remember to restore your backed-up data and install necessary applications to complete the setup process.