• Faulty or Leaking Electrolytic Capacitors

Some motherboards may contain faulty or leaking electrolytic capacitors, which can negatively impact system performance or stability. These capacitors may exhibit issues such as bulging, leaking, or even exploding, potentially damaging other components on the motherboard. Users should inspect their capacitors regularly and replace any that are faulty or leaking to avoid damage or system instability.

• Asus PS/2 capacitor network shorting

The C151 capacitor network (located next to the PS/2 ports) can potentially get shorted, causing the keyboard and mouse to not work, more info here and here.