How can you yourself understand what exactly is out of order in the PC?

Question

Iron

The PC was very heavily loaded when working with graphics. At home, traffic jams were knocked out, now the PC does not turn on. I dismantled it, I thought either the mother, or the power supply flew. There is no burning smell. Is there a way to separately check whether the mother and power supply are in working order?

Answer 1

- Turn on the PSU without the motherboard and measure the voltage. You can start with this geektimes.ru/post/127783
- Connect a working PSU to the
motherboard