M.2 NVMe support for Dell XPS 8900 i7 6700 3.4ghz Win 7 Pro

Greetings! We are trying to determine the best storage option for our new Dell. We need to know if the model we have supports the M.2 NVMe generation of internal SSD drives. We are specifically looking at the SAMSUNG 960 EVO M.2 500GB NVMe PCI-Express 3.0 x4 Internal Solid State Drive. We have been told that there is a BIOS issue if the motherboard or BIOS doesn't asupport using the M.2 NVMe drive as the primary boot drive.

1. Is this true?

2. What are our options to use an M.2 NVMe ssd as our primary windows and program boot drive?

Thanks in advance