Question: Hi..i can see my hard drive on my bios, but it doesn’t assign a letter or give me access..
here is my system
Intel Core i7-9700K 3.6 GHz 8-Core
MSI MPG Z390 GAMING PLUS
Corsair Hydro Series, H115i PRO RGB, 280mm.
G.SKILL TridentZ RGB Series 32GB (2 x 16GB) 288-Pin DDR4 3200MHz
EVGA GeForce RTX 2070 SUPER 8 GB
Intel 1TB 665P M.2-2280 NVME SSD (main disk)
4TB 3.5″ (backup /storage disk)
Cooler Master MasterBox HAF
Corsair RM (2019) 850 W 80+ Gold Certified Fully Modular ATX

1st boot today, windows installed on ssd, but no harddrive..thanks in adv for help

Answer:Check you user manual for which SATA ports are disabled when using a drive in an M.2 port.

After that, open Disk Management. Does the drive appear there? It might just need to be Initialized.