On October 14, 2025, Windows 10 will reach its end of life, affecting users with older PCs that cannot upgrade to Windows 11. ChromeOS Flex is a free operating system by Google designed to modernize older Windows PCs and Macs, offering a fast and secure alternative built on Chromium OS. It does not support standalone Windows applications but allows access to Microsoft 365 and other SaaS applications via web portals. ChromeOS Flex focuses on security with features like automatic updates and data encryption, and it has never experienced a reported ransomware attack. The minimum system requirements include an Intel or AMD x86-64-bit compatible device, 4 GB of RAM, 16 GB of internal storage, and the ability to boot from a USB drive. To install ChromeOS Flex, users must back up their files, create a USB installation drive using the Chromebook Recovery Utility, and boot from the USB drive to test compatibility before proceeding with a full installation.