atx psu

I'm a beginner electronics enthusiast. I'm working on a variable power supply made from an ATX PSU. For the variable voltage output, I'm planning on using a step up module from the 12V 16A ATX in, boost it up to 30V then connect that to the step down converter for variable voltage. Is this ok...

Hello, i was planning to use my old pc power supply, to make lab power supply. When i plugged it to the main voltage, everything works normal, normal output voltages and such. The problem came when i tried to connect the load on the 12v rail, it keeps shutting down, due to the overcurrent...