Are you having detection problems after recently fitting an aftermarket or third-party SSD? It is recognized in the BIOS and Device Manager, but Disk Management cannot see it?
You can resolve this is by removing the drive from the storage pool that has taken ownership of the new drive in Manage Storage Spaces.
(Figure.1 Manage Storage Spaces)
If you have created a pool in Windows 11, Windows 10, or upgraded an existing pool, then you can remove a drive from it. The data stored on that drive is moved to other drives in the pool, and you can use that drive for another purpose:
Open the start menu and type Storage Spaces, then select Storage Spaces from the list of results that appear
Select change settings > physical drives to see all the drives in your pool
Locate the drive that you want to remove from the pool
Select prepare for removal > prepare for removal. Leave the computer plugged in until the drive is ready to be removed
If the computer keeps going into sleep, you can prevent this:
In Windows 11: Type Power and battery in the Start Menu, and then select screen and sleep. Change When plugged in, put my device to sleep after, to Never
In Windows 10: Type Power & sleep in the Start Menu, and then select power and sleep settings. Change when plugged in, computer goes to sleep after, to Never
When the drive is showing as ready to remove, select remove > remove drive. Now, you can enter the Disk Management console and see if the computer now detects the drive.
You may want to delete the Storage Pool if the drive is still not detected