New psu won't work, old one still works

[emzett1]

Hi There,

I recently openend this thread in CPU's: https://forums.overclockers.co.uk/threads/cpu-bottleneck-ryzen-9-3900x-rtx-3080-ti.18936885/ and did more and more research.

One of my fears is that my PC is drawing too much power and my PSU is running at almost 100%. I am a noob, so cant confirm or did not exactly check.

So I upgraded from my 750w psu to a 1000w psu.
OLD: GAMDIAS KRATOS P1 G 750 W 80+ Gold Certified Semi-modular ATX Power Supply
NEW: be quiet straight power 11 1000w

After installing the new PSU my PC would not turn on anymore.
Things I can confirm:
- PSU is turned on
- Lights on Mobo Show (So it receives power)
- All cables are connected correctly. Did that 4 times.
- Old PSU still working fine after all.
- When pressing the power on button on the PC the PSU does a click noise but nothign will happen. Clicking noise only comes once. After that it doesnt do anything anymore.

How is it possible, that a less premium and less w psu works and a brand new psu with higher quality and w is not?

Please let me know if you have any idea why the new one does not work if you have any ideas.

 

[emzett1]

EDIT: No Fans turn on.

 

[emzett1]

Have you tried with just the 24pin and 8pin CPU cables?

I did. not turning on.

like what he said,

also have you plugged all the cables in the right way round... it is possible to force some of the (im thinking the 4/8 pin one by the CPU particularly)

cables connected are not the issue. All of them were secured and correctly inserted. There is no chance I did that wrong. I repeated it 4 times to be sure. Same result.

Did you change all modular cables to BeQuiet's cables?

I only have bequiet cables. the other one was not modular.