Microsoft Windows offers three power-off options: Sleep, Hibernate, and Shutdown. Shutdown closes all programs and turns off the PC completely. Hibernate turns off apps and services but retains what is in the RAM, allowing for a faster boot-up. Sleep mode puts the system in low power mode and quickly resumes when needed. Shutdown is best for long periods of inactivity, Hibernate retains data and boots faster, and Sleep mode is ideal for quick breaks with access to power.