Afraid to give myself an heart attack...
In the US the standard 120vac breaker spec is 15a. If the computer setup is using so much power I would think the the wall outlet breaker would be tripping when something else on the circuit was switched on. In a old house I lived in I had a microwave and a small 5000 btu window air conditioner on the same circuit and only one could be used one at a time.