Bulging capacitors are a common sign of a faulty motherboard. Capacitors are electrical components that store energy. When a capacitor fails, it can bulge or even burst. This can cause a variety of problems, including: - The motherboard not powering on - The motherboard powering on but not booting - The motherboard overheating - The motherboard causing other components to fail To visually check for bulging capacitors, the technician should inspect the motherboard carefully. Any capacitors that are bulging or leaking should be replaced.