(SOLVED) New build wont POST

[Snowmirage]

Making this post in hopes that it helps someone in the future.

I build a new Ryzen 7 3700x system with a Gigbyte X570 motherboard last night.

Previously I had a Asus Z77 Sabertooth and a 3770k.

My HX1000i Corsair CPU is fully modular.  When I went to put in the new hardware I needed an additional 4pin CPU power cable.

I pulled out my box of hardware and found an extra PSU cable (made sure it wasn't the PCI-E cables, and matched up the end the plugged into the PSU).

Fast forward about 3 hrs of struggling to figure out why my new build wont POST, all I would get was a few clicks from the motherboard, and I finally realized the new cable I used wasn't from a corsair PSU, it was from some other PSU that was still keyed to fit but apparently not wired the same way... or something.

Dug around in my spare hardware for a while and found the original extra corsair CPU cable, and that fixed it.

So lesson learned if you have spare hardware keep the PSU cables labed as to which PSU they go with.

[Mateyyy]

11 minutes ago, Snowmirage said:

So lesson learned if you have spare hardware keep the PSU cables labed as to which PSU they go with.

Agreed. Good thing nothing worse happened.

 

Regardless, the extra 4-pin is totally unnecessary unless you're subzero overclocking, even more so since I'm pretty sure that Gigabyte uses the high current variant of the EPS connector anyway.