Question New NVMe not allowing me to boot!

[VonWitzland]

SO I bought a new Crucial P3 M.2 NVMe and my system was working fine. I turned off my PC and when it loads up I get the required device isn't connected or can't be accessed. Error code: 0xc000000f. I have absolutely no idea how to get it working and can't check anything with the SSD because I cant even get onto my system with it installed!

ANyone know how to help?

CPU: Ryzen 5 5600x 6 Core 12 Threads (3,700Mhz Default clock - 4,700Mhz Boost clock) (Runs at about 45 *C idle, and up to 84*C when gaming/under load)
CPU Cooler: BeQuiet Pure Rock II Black single black 140mm fan (1500 RPM at load)
GPU: MSI RTX 3070 Gaming Z Trio
Motherboard: AMD B450 A-Pro Max
RAM: 16GB (2x8GB) 3200Mhz
PSU: MSI A750GF 750w
OS: Windows 10
Drives: Windows installed on a 150GB SSD, games installed on a 1TB HDD.
Monitor: Lenovo 1440p 165Hz

 

[hedwar2011]

Are you able to go into the BIOS? If so, go in and check your boot order and make sure that the correct drive is showing as the boot drive.
If not, disconnect that drive and boot again and see if it boots properly.

Sounds like it's trying to boot to the drive you have designated for games and not the OS.

 

[VonWitzland]

Are you able to go into the BIOS? If so, go in and check your boot order and make sure that the correct drive is showing as the boot drive.
If not, disconnect that drive and boot again and see if it boots properly.

Sounds like it's trying to boot to the drive you have designated for games and not the OS.

From What I have seen, the boot order is the same as it always is. However, I can't see the new Crucial P3 SSD if I look at the boot order, I have to manually click on Legacy+UEFI, then I can see it.

 

[hedwar2011]

When you do that, make sure that the HDD is listed AFTER the SSD in that listing.

 

[Ralston18]

This motherboard?

https://download.msi.com/archive/mnu_exe/mb/E7B86v4.0.pdf

Do verify that I found the applicable User Guide/Manual.

How was RAM installed? Did you start with DIMMA2 per physically numbered Page 28?

SATA: Note the related SATA and M.2 requirements per Pages 30 and 31.