The M.2 NVMe SSD hard drive may not be detected on startup or reboot on Precision 15 5000 (5510) or XPS 15 9550 laptops. Follow the solution steps outlined in this article to resolve the issue.
On Precision 15 5000 (5510) and XPS 15 9550 systems with M.2 Non-Volatile Memory Express (NVMe) M.2 Solid State Drives (SSDs), the SSD may fail to be detected in the Basic Input/Output System (BIOS) at start or after a reboot of the system. The following error may be presented (Figure 1):
Figure 1: Precision 5510 and XPS 9550 Hard Drive - Not Installed error
Installation of the latest BIOS revision will resolve the issue: