Question Bad SATA Slots or Configuration anomaly?

[NerevarineX]

Greetings,
I wish to have a problem resolved that has been haunting me for a while now,
i have a computer with the ASUS PBZ77-M motherboard, it has 6 SATA slots,
i have a problem connecting multiple drives with the motherboard,
A single drive can work in any of the six slots, yet when I add another drive, It shows (detected) in the BIOS but not in Windows 10 (Disk Management/Device Manager)
Apparently, two drives work well only if I connect to SATA 2 and SATA 5 (As in detected in Windows) and not any other way around.
Three drives can be connected if I connect them to SATA 2, SATA 5 and then SATA 4. There is no other way to make 3 drives work.
Four drives are not possible, as 3,1,6 are the remaining slots after using 2,5,4 for three drives but neither of the 3 (3,1,6) slots work with the fourth drive.
What could this be? All slots are fine as in a single drive can work with any of the 6 slots, but using them simultaneously presents malfunction?
It doesn't depend on the type of drive connected, results stay the same whether an SSD or an HDD.
I will be grateful for your help.

 

[SkyNetRising]

Check SATA controller mode settings in BIOS.
Should be set to AHCI.

Note - Changing sata controller mode after windows is already installed may require reinstallation of windows.

 

[NerevarineX]

Check SATA controller mode settings in BIOS.
Should be set to AHCI.

Note - Changing sata controller mode after windows is already installed may require reinstallation of windows.

It was already set to AHCI by default,
what else could it be?

 

[SkyNetRising]

what else could it be?

What PSU are you using?
Is it modular? Are you using original modular cables with it?
Using wrong cables can damage/kill devices connected or cause them not to be detected.

Might also be - PSU is too weak to provide power to all your drives.

 

[Grobe]

What happens if you boot up - say the Gparted iso image (tool for hdd partitioning) - does the hdd appear then ?