What is a common symptom of a failing power supply?

Random shutdowns and restarts of the computer are a common symptom of a failing power supply because a power supply unit (PSU) is responsible for delivering stable and adequate power to all components within a computer system. When a power supply begins to fail, it may not be able to provide consistent voltage levels or may completely lose power intermittently. This leads to unexpected shutdowns or restarts, as the computer cannot operate when it suddenly loses power.

Unlike other symptoms like slow processing speed or software crashes, which can be associated with various other hardware or software issues, random shutdowns specifically indicate that there is a problem with the power delivery of the system. It's important for technicians to recognize this symptom as it may guide them to test or replace the power supply as part of the troubleshooting process to restore system stability.