Hard Drive Detection Repair

My desktop’s hard drive suddenly vanished from both the BIOS and the operating system. All cables and power leads appear firmly seated, yet the drive will not spin up or register on any SATA port I try. I need a skilled hardware repair-focused technician to diagnose the root cause and bring the drive back to a state where it is reliably detected again.

The job is strictly hardware-level: testing the drive on proper benches, checking the PCB and controller, inspecting the power delivery, replacing or repairing any failed components, and verifying the unit in a working test rig. If a donor board or firmware flash is required, please let me know beforehand so I can approve sourcing.

Deliverables
• A repaired hard drive that mounts consistently on a standard SATA interface
• A brief report outlining the fault you found, the parts or procedures used to fix it, and a final SMART/health screenshot confirming normal operation

Turnaround matters because the data is important, so an indicative timeline in your reply would be appreciated.