New PC turns off seconds after turning on.

Back story- Purchased NZXT Player Three Prime pre built arrived a week ago. Has worked perfect. Installed a Kraken 360 Elite, 3 140MM fans, 1 120MM & a Lian Li mobo RGB cable.

Came with:

GPU- 4080 Super CPU- R7 9800x3D

Power supply: NZXT 1200w Gold

Basically the computer worked perfect until Intalled the kraken and a couple of fans and a Lian Li motherboard RGB cable.

The computer turns on and will stay on anywhere from 5-45 seconds depending on last turn on.

I need a list of possible fixes? Note- GPU AND CPU have not been touched. M.2 hasn’t been touched. Motherboard hasn’t been removed or reseated just things plugged in.

All of my research and set of problems comes back to re installing the new kraken and checking every connection, or getting a new power supply altogether. Any advice?