A "Hard Reset" refers to the process of restoring a device, such as a smartphone or computer, to its original factory settings. This action erases all user data, applications, and settings, effectively returning the device to the state it was in when first purchased. It is often used to troubleshoot persistent issues or prepare a device for resale. Performing a hard reset can vary by device. For example, on a smartphone, it typically involves pressing a combination of buttons, while on a computer, it may require accessing the settings menu. Always back up important data before proceeding with a hard reset.