Question Where to plug CPU into modular PSU, there's no pins or slot for it ?

Hi there , my PC wont boot after I tried to add an SSD. I've tried everything and I have tried a new PSU with no luck. My new PSU however is modular and doesn't have pin slots on the front.
I have a cable coming from my pcu ( I think that's it) which I cannot connect anywhere and am completely stumped.

View: https://imgur.com/gallery/3ZPyv01
Look at manual for that AIO cooler, it will tell you where to plug those leads in. It has nothing to do with PSU, modular or not. With all MBs at least some fan has to be connected to CPU_FAN header or it will refuse to BOOT.
At most, cooler circuit only needs SATA connection from PSU and that's provided with any PSU as standard.