Computer Cuts Power And Wont Turn On. Help!!

[patthelonewolf]

Hi,
so i was in the middle of gaming on my custom pc and it randomly cut power. i tried everything from resetting all the cables to trying a new power cable to clearing the CEMOS to testing all the ram slots to reseating the cpu to shorting the power and ground for a force start. nothing. i dont have another power supply or motherboard. I just built this pc with all new parts. What should i do????

Pc Specs
cpu: AMD Ryzen 1300x
GPU: GTX 1050
Power supply: Corsair VS 400
RAM: 8 GB ddr4

 

[popatim]

Plug a lamp or something into the same outlet and make sure you have power at the plug.
Make sure the switch on the PSU is ON (1)

Disconnect the psu wiring from the motherbd and peripherals. All of it.
On the 24pin connector, jumper the green wire to one of the black ones. I use a bent paper clip if I don't have my tool.

If the PSU doesn't turn on then its shot. Hopefully it didn't take out anything when it died.
If the PSU does turn on, you can measure the voltages at the 24 pin. Orange is 3.3v, Red is 5v, Yellow 12v, and blue -12v. The Grey wire should be anywhere from 3 to 5v. Thats the one that tells the motherbd that its ok to start booting up.

If the voltages are good then you likely have a short somewhere and it's being detected by the PSU and protecting itself. Start hunting. I would begin by breadboarding the system outside of the case.