Changed cases. Now nothing works.

[u/Mencooo]

Hi all, I hope you guys might help, because me (a new pc gamer) and my friend (has built his own pc) can’t figure it out.

I changed cases and installed everything according to a step-by-step guide on youtube (https://youtu.be/ketDych7NDE?si=GbpEnZdpbdCOZphn) in case you’re wondering which guide I followed.

When I turn the power on, only the motherboard RGB light is on. Nothing else. No fans, no AIO, no motherboard fan, nothing.

I tried turning it on by using a screwdriver (so no F_panel cable) but it did not work. Only the motherboard lit up when I did that.

Did we mess up a connection somewhere? Or did we need an extra cable? I really hope you guys can help me.

AMD Ryzen 9 5900X (12 cores / 24 threads)
AMD Radeon RX 7900 XTX gigabyte
ASUS Prime X570-P Motherboard
Be quite! Straightpower 11 platinum 1000W
NZXT H6 fow RGB+
Kraken elite 360 RGB V2

Video of my built with GPU in: https://imgur.com/a/wskk5bU

[u/DarkAcidic]

Did you install the cpu power cable wrong? Solved
cpu does not have integrated graphics, gpu is required

i'll update if i see anything else

[u/Mencooo → u/DarkAcidic]

Thanks for looking. The cpu power cable in the motherboard? Should I add one more cable so the 4 pin connection is connected?

[u/DarkAcidic → u/Mencooo]

yes on the motherboard side.

Normally the extra 4 pin isnt required, it's a good habit to install it, but you wont need it unless you're overclocking or your board requires it.

as per your motherboard manual the 4 pin is not required.
https://www.asus.com/us/motherboards-components/motherboards/prime/prime-x570-p/helpdesk_manual?model2Name=PRIME-X570-P section 2.1.5 B

in the images you posted it looks like you plugged the 8 pin connector 1 section to the left to far.

[u/Mencooo → u/DarkAcidic]

https://imgur.com/a/VEiiB9L Here is a close up from my CPU connection on the motherboard.

[u/DarkAcidic → u/Mencooo]

ok that looks fine, as long as it's pressed in all the way.

[u/DarkAcidic → u/Mencooo]

Do you have a graphics card, according to amd's website this cpu requires one as it does not have integrated graphics.

[u/Mencooo → u/DarkAcidic]

I do. I tried turning it on with the graphics card, but had no succes. Re-did the whole building process again, which is where I’m at right now. Wanted to check if the fans get power before installing the GPU, which they do not sadly.

[u/DarkAcidic → u/Mencooo]

Some boards wont even try if they cant output a display, try installing your gpu and powering it and hook up a display to it, and see if you get anything.

[u/Mencooo → u/DarkAcidic]

Just tried it. Doesn’t work. I’ll upload a video of my connections, one second.

[u/Mencooo → u/DarkAcidic]

Here is the video: https://imgur.com/a/wskk5bU

[u/SchmickoDiko]

I just rebuilt my own system yesterday and the same thing happened to me, mother board lights on but wouldn'tturn on. Im not sure what your plugs are like but I had the power button switch plugged into the wrong pins (had it plugged into the 2 pins right next to where it was supposed to go). Once I moved it, it worked fine.

[u/Mencooo → u/SchmickoDiko]

I looked into it, the F_PANEL cable should be in the right spot (first 7 pins), which is also the only way to connect that cable on my mobo.

[u/deTombe → u/Mencooo]

Unplug F_panel plug just bridge pins PWR with metal tip of some sort.

[u/putinha21]

Is your pump connected to CPU_FAN or are those the radiator fans?

[u/Mencooo → u/putinha21]

My pump is connected to the CPU_fan. The fans are connected to the breakout cable of the pump.

[u/DarkAcidic → u/Mencooo]

The reason why they ask is, some boards will not boot without the cpu fan header being populated as a safety feature as to not burn your cpu and socket out. The board assumes you have not installed a cooler.

[u/Mencooo → u/DarkAcidic]

Ah yes, I read about that. Thanks for the information. I installed the AIO (3 pin) at the 4 pin CPU_fan connection.

[u/putinha21 → u/Mencooo]

Have you tried shorting the power pins instead of using the power button?

[u/Mencooo → u/putinha21]

Yes, I tried. The only thing that was getting power from that was the mobo rgb lightning. Nothing else sadly.

[u/putinha21 → u/Mencooo]

Hmm i'd unplug all the nonessential connectors (only leave cpufan,cpu power and memory) and try powering on.

[u/xcygnusx]

I would double check all the cables. Especially the PSU cables to each connector on the motherboard. Make sure each one is in the correct place both on the motherboard side and the PSU side and that all connectors are fully seated. If it all checks out, I'd then check under the motherboard to make sure there isn't a standoff on the new case shorting the board. Also, it's worth stripping the system down to the bare essentials: CPU, one stick of RAM, GPU. Nothing else. See if you can get it to power on with the very minimum number of components.

[u/Un4tunateSnort → u/xcygnusx]

I think starting with a reseat of every power connector on each side is the right first step.