Safe Mode is a diagnostic startup mode in Windows and other operating systems that allows users to troubleshoot issues. When a computer is in Safe Mode, it loads only the essential drivers and services, which helps identify problems caused by software or hardware conflicts. In Safe Mode, users can perform tasks like uninstalling problematic programs, running antivirus scans, or restoring system settings. This mode is particularly useful when the computer is unable to start normally due to errors or malware, providing a simpler environment to resolve issues without interference from other software.