I've noticed that sometimes when the shower in the house is turned on my PC turns off. If I press the power button it will not turn back on until the shower is finished. However it does not happen every time the shower is turned on! Is this a problem with the PSU or the wiring in the house? My PSU is a (new) corsair hx650. I've never seen this happen in the previous 6 months with my old PSU (a 200w one from an old Dell machine) but then my old PSU is rated lower.