I built my own computer and a year later the PSU (500W) burnt, I bought a new PSU again ( coolmaster 700W ) and now ( 5 months later) it is burned again. What could be the cause? Did I improperly wire my computer ? or is it the power outlet?
I checked the ground connectivity with my multimeter and it looks well grounded ( low resistance and 3V approximatively).
I have 2 hard-drive, a 460 GeForce graphics card. and a Quad core.