Windows 8.1 Loader - Activator

Because a loader modifies the boot process, a single Windows Update can break it. When Microsoft releases a security patch (even for an unsupported OS via their extended security update program), it often overwrites the patched system files. The result? Your PC fails to boot. You are greeted with a black screen reading: "Bootmgr is missing" or "Critical system driver missing." Recovering from this requires a complete reinstallation of Windows, resulting in total data loss.