New pc not turning on.

[Abull2003]

I recently build a pc with the specs listed below. I am new to pc building and cannot find the issue. Cpu: Ryzen 2600x MB: ASRock B450 pro4 Gpu: Power color rx570 Ram: Corsair vengeance lpx 2 8gb 3000mhz Ssd: intel 660p 512gb Power supply: 750 watt 80 plus bronze.

[veeg]

Hello

Did you make sure you installed the stand off’s correctly?

@Bruce @Evan Omo

[Bruce]

to trouble shoot, I would remove all components from the case and assemble them at your desk on a piece of cardboard.
and only attach the bare minimum to get the PC started; mobo, 1 stick RAM, power, keyboard, mouse, monitor, processor, SSD.
have you checked all the parts are compatible?
what is your OS?
I had an Intel 600P NVMe that wouldn’t load Win10 1803 (or one of the builds either side) due to an incompatibility, don’t know if Intel has addressed that with the 660P or if MS has with the newer builds, but I changed SSD’s because of it.
is there a firmware update for that mobo?

[Abull2003]

Hello

Did you make sure you installed the stand off’s correctly?

@Bruce @Evan Omo

Yes but I didn’t not remove the standoffs for m itx motherboards.

[phillpower2]

Have you tried doing the barebones test suggested by Bruce.

[Abull2003]

Is that with only the cpu and ram connected to the motherboard. If so yes and same result occurred.

[phillpower2]

To do a barebones test you connect to the MB, the PSU, the screen to the video card, a keyboard, the CPU in its socket, the CPU cooler connected to the correct header on the MB and one stick of RAM in the appropriate slot on the MB.

Can you explain what you mean by same result occurred, your thread title “New pc not turning on” does not tell us much I`m afraid, it could mean that when you press the case power button nothing at all happens or it could mean that you press the case power button, the PSU and fans spin up but the screen stays black etc.

[Abull2003]

The result is nothing no fans turn on and the psu stays off. Shorting the pins also didn’t work. I already replaced the motherboard so I doubt I would get two dead ones.

[DOUGIE]

The result is nothing no fans turn on and the psu stays off. Shorting the pins also didn’t work. I already replaced the motherboard so I doubt I would get two dead ones.

I have seen guys not turn the psu to “ON” position,and wonder why, everything is dead.

[DOUGIE]

Pull the 24 pin plug off and get a paper clip and join the green wire to a black opposite and see if the psu spins up.

[Abull2003]

The psu spins up with that trick but still nothing when all cables are connected.

[DOUGIE]

Is the 12v motherboard plug at the top of the board, getting 12v from the Power Supply?

[DOUGIE]

Has to be the right connector. Mated plug.

[jmarket]

Look in your motherboard manual , REMOVE the “power on” connectors from the front panel header and short the 2 power on header pins with a screwdriver. If the pc starts this will tell you either the front panel switch or cabling to the switch is faulty.

[phillpower2]

See attachment below Abull2003,