I'll suggest you to sell your motherboard and buy any other one (that doesn't has history of capacitor problem).
Why? Because it's not a heat problem. Cooling is good but whether your apply extra cooling or not, if it has defected capacitors then eventually it will fail.
Here is how a capacitor goes bad:
"When a faulty capacitor is charged, the water-based electrolyte becomes unstable, and breaks down producing hydrogen gas. Since these types of capacitors are sealed in an aluminium casing, the pressure builds up within the capacitor until either the flat metal tops of the capacitor begins to bend, or the rubber sealing plug is pushed down. Eventually the pressure exceeds the strength of the metal casing and venting occurs, either by blowing out the rubber bottom of the capacitor, or bursting the scored metal vent on the top of the capacitor. When an electrolytic capacitor bursts, effects can range from a pop and a hissing noise to a small explosion. Venting is typically messy, and the acidic electrolyte must be cleaned off the motherboard to prevent further damage."
Furthermore, it can even damage your processor, RAM and other components.
Prevention is better than cure. I am basing it on my own experience. I am also a victim of faulty capacitor on motherboard and once in a cheap Chinese power-supply.
Get another motherboard.