1) DEVICE:
Netac NV5000, 500GB, M.2 NVMe. Controller presumably TenaFe TC2200 (not visually
confirmed — board under heatsink with "warranty void if removed" seal).

Hardware ID seen before failure (old Windows log):
PCI\VEN_1F40&DEV_0001&SUBSYS_02801D89&REV_00
PCI\VEN_1F40&DEV_0001&CC_010802

2) BRIDGE USED FOR DIAGNOSTICS: JMicron JMS583
VID: 152D / PID: 0583, fw jm583_00_02_01_04
Shows as "JMicron Generic SCSI Disk Device" / "JMicron Generic 0214"

3) FAILURE CAUSE:
Drive stopped being detected after RAM overclocking instability errors on the
motherboard (not the SSD itself overclocked — system RAM OC caused instability,
drive failed to be detected afterward).

4) TEST RESULTS:
Windows: Disk Management asks to initialize, "No Media" / can't read size.
R-Studio: "JMicron Generic 0214", size field empty.
DMDE: "Disk unavailable".
Linux dmesg: Sense Key Hardware Error, ASC=0x44 ASCQ=0x81, Read Capacity failed,
0 logical blocks.
smartctl: "Test Unit Ready [medium or hardware error (serious)]"
Identical error across Windows/Linux/macOS.

5) J2 SHORTING TEST:
Shorted contacts labeled J2 on the board (no documentation, guesswork — J2 is one
of several unlabeled pads near the controller). After shorting, Tenafe NVME flash
id v0.11a utility returns:

Model: Merak Nvme Ssd Controller
Fw: c1bc3e90
Size: 1 MB [0.0 GB]
LBA Size: 512

Without shorting J2, the same utility returns "Identify error!" with no response
at all. So J2 shorting does change something, but Read Capacity/actual sector
reads still fail — drive still shows 0 usable blocks/bytes in every OS.

Is "Merak Nvme Ssd Controller" / 1MB actually a genuine ROM/boot mode, or just the
controller's standard firmware-panic fallback identity (as seen in a similar
Kingston case on Tom's Hardware forums)? If it IS a real ROM mode entry — what's
the next step to dump NAND/FTL from here?

Data matters, zero budget for professional recovery (student). Board photos
(without breaking warranty seal) available on request.

Yes, shorting the pins returns the correct controller identification data.
The TC controller is not supported by commercial tools, so in-house solutions are the only option.


In that case, you must accept data loss.

_________________
Data recovery Poland (RAID, HDD, SSD) - https://hex-serwis.pl

The SSD has a 5 year warranty so try that. Make a backup of important data, never assume any disk or SSD is perfect.

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USB 3.5" enclosures are $19 USD postage paid from China, I own several