Motherboard minimum parts to turn it on

[roganc23]

When I get a mobo or i am just making a new build I always test it without all the components in the mobo right now it has nothing but the cpu the mobo is a b350 prime plus and all the case connectors are plugged in right and the psu works as I jump started it could it be the case or do I need more compenants in there pls help

 

[kanewolf]

A B350 will require motherboard, CPU, cooler, RAM, power supply, and graphics card. The Ryzen has no built-in graphics so the graphics card is required.

 

[HamBown81]

You need at least one stick of RAM and you will also need a discrete graphics card b/c no integrated graphics on Ryzen

The system should start with the following:
- Power supply
- CPU
- GPU
- 1 stick of RAM

 

[mdd1963]

Having a light and/or fans come on really doesn't tell you much, so, I'd go with the standard array:

CPU (with sink on, fan wired to correct CPU FAN header, CPU PWR from PSU connected to MB)
PSU
one stick of RAM in required slot
PWR SW wired to mainboard header correctly
GPU (with supplemental GPU 6/8 pin wired if required)
kybd/mouse (if you wish to enter BIOS, but, not required simply to power on)

Until you get a BIOS display, you can make no conclusions anyway....

 

[roganc23]

A B350 will require motherboard, CPU, cooler, RAM, power supply, and graphics card. The Ryzen has no built-in graphics so the graphics card is required.

 

[nitinvaid20]

MERGED QUESTION
Question from roganc23 : "Is it broke ?"

I'm not sure if my mobo is broke because last year I built a pc and before I had all the parts I only had ram in the mobo with psu connected
that was it is turn it on via case
It went on this year it's not and the only difference so far is it has a ryzen cpu in it same and the mobo is b350 prime plus with no ram pls help am I just para noid

without ram?
how its gonna boot we need more info then just broke
what is happening it is powering on or not

 

[roganc23]

It is not powering on i do not want it to boot I just want it to deliver power to the fans and leds but it's not working and the psu works fine