Struggling with NVME ssd in MSI motherboard on new build

[Tomfox747]

Hello

I have a new build which i've almost finished.

The specs include
CPU - Ryzen 5 1600x
GPU - 1060ti 5GB
RAM - 24GB ddr4 RAM
Motherboard - MSI Tomahawk B450
SSD - 1TB Western Digital SN550 (NVMe)

Everything is working and i've got the PC running using my old SATA SSD
But neither the BIOS or Windows is picking up the new NVMe hard drive

I've tried updating the Motherboard drivers
Reinstalled the SSD
Booted with and without the old hard drive
Reinstalled windows 10

I already sent one of these hard drives back for testing and it came back as working, so I now have another one to try again and the SSD itself probably isn't the issue

So I'm guessing that it's either the motherboard (hopefully not lol)
Or I'm doing something wrong

Can anyone offer any help?

 

[mrbazmondo]

Do you have enough free PCIe lanes? Check the manual, some lanes get deactivate when you have cards in certain slots usually.

 

[im4gine3]

possible the drive is not supported.. update bios to rectify this

 

[Tomfox747]

So I haven't been able to flash bios as it isn't recognising my USB's. However I have confirmed that the BIOS version is up to date with the most recent non beta bios version.