RAID mode enabled in BIOS (Intel RST or AMD RAID). Solution: Enter BIOS → Change SATA mode from RAID to AHCI (warning: this may make Windows unbootable unless you first switch drivers in Windows). Only do this for diagnostics, then revert.
Use the exact phrase "HP Image Assistant download" in a search engine, then select the result from hp.com or h20331.www2.hp.com . hp service tool download
: Can be run while your computer is operating. RAID mode enabled in BIOS (Intel RST or AMD RAID)
For those looking for physical repair instructions, HP provides detailed PDF manuals for almost every model. hp service tool download
Best used when your system is corrupted or you are replacing your primary hard drive. 4. HP Service & Maintenance Guides (DIY Repair)