Hi Brad,
Short answer: yes, it is possible.
However, please note that Windows 8.1 reached End of Life (EOL) some time ago, and Microsoft no longer provides a public download of the Windows 8.1 ISO. As a result, you may need to rely on third-party websites to obtain the installation media. Please proceed with caution, as these files are not hosted or verified by Microsoft.
For detailed instructions on downloading and installing Windows 8.1, please refer to this guide: 3 Ways to create USB bootable media to install Windows 8.1 (2026) - Pureinfotech.
Please follow the steps carefully and back up any important data before making changes to your system.
Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
If you encounter any difficulties during the process, please feel free to let me know.