How does the post process alert the user if it detects a hardware problem during the postprocess?

During the Power-On Self-Test (POST) process, the system performs a series of diagnostic checks on the hardware components. If a hardware problem is detected, the system typically alerts the user through a series of beeps known as beep codes, or by displaying error messages on the screen. Additionally, some systems may use LED indicators to signal specific hardware failures. These alerts help users identify the nature of the problem for troubleshooting purposes.