Solved Can't get sata ports to work

okay so this is my build https://ca.pcpartpicker.com/user/Doploctor/saved/tGLd6h
i'm trying to get my 3 tb hdd to run on my pc but i can't get any of my 4 open sata ports to see it, i've tried to fiddle about with the bios and the disk manager and i've tried changing the sata cable.
for some reason the only ports that register anything are 3 and 5, from what i've gathered in the last 2 days of messing around is that the m.2 shares 5 and 6 or 1 and 2 but i have no m.2 device installed and clearly port 5 is in use so i can't understand why ports 4 and 6 won't work, i even went to the lengths to remove my hard drive and try port 2, any advice would be great because i'm at the limit for my ability to self teach

in my bios all 6 ports are listed as enabled, the only ports that list a drive attached are ports 3 and 5, nothing new is showing up in my disk manager or the bios
i'm currently running windows 10 on my computer
and i built this computer in the summer of 2016, i'm just deciding to add more storage to it now with the 3tb hdd

okay so i've gone back inside my computer to try putting the new HD into port 3 which didn't work as well, so i decided to try the sata cable that was attached to my working HD and my bios could suddenly see the new HD even in the other ports i wasn't using. i have 3 sata cables that were from the modular power supply one is on my SSD and works but i guess the other two cables are busted. (asus- sata 6gb/2 -1522)

Thanks a bunch for that one suggestion that helped find the issue, i never considered that both new sata cables were dead