SSD Controller Failure Data Recovery
When an SSD's controller fails, the drive usually vanishes without warning: gone from File Explorer, gone from Disk Management, often gone from the BIOS too. Your files are usually still sitting in the flash chips. Reaching them takes specialized work, and we do it for one flat price with nothing to pay if we can't recover your data.
Signs of ssd controller failure
- •SSD or NVMe drive missing from the BIOS or UEFI on every computer you try
- •Drive is detected but shows 0 bytes or no capacity
- •Computer freezes at boot or won't start with the SSD installed
- •Drive got hot, then disappeared
- •SSD died suddenly with no slowdown or warning beforehand
- •External SSD is dead on every cable and port
What’s actually happening
An SSD's controller is a small processor that manages everything: it spreads your data across the flash chips, tracks where every block lives, handles wear leveling and error correction, and talks to your computer. When it fails, from a power event, heat, a component fault, or a firmware crash, the drive can't present itself at all. That's why controller failure often looks like a drive that's simply gone.
The good news is that the NAND flash chips that actually hold your data are usually intact. The hard part is that they don't store your files in a readable order. The controller scrambles, interleaves, and wear-levels data across the chips, and many modern SSDs encrypt everything internally with a key held by the controller, even if you never set a password. Pulling the chips and reading them directly (chip-off) only works when the lab can undo all of that, and on drives with controller-bound encryption it often isn't possible. In those cases the controller itself has to be brought back to life.
TRIM matters here too. Files you deleted before the failure were likely already erased by TRIM and garbage collection. A controller failure doesn't erase your existing files, but it also doesn't bring back data the SSD had already cleared.
What not to do
- ✕Don't keep power-cycling it — repeated attempts can add stress to a failing controller or power circuit.
- ✕Don't run secure erase, sanitize, or a vendor reset tool — these can permanently wipe the flash or destroy the encryption key.
- ✕Don't try a firmware update to revive it — flashing a failed controller can overwrite the mapping data needed to rebuild your files.
- ✕Don't remove or reflow chips yourself — heat and handling can damage the NAND or controller, and chip order matters.
- ✕Don't forget your encryption keys — if BitLocker or FileVault was on, you'll still need your recovery key or password after the drive is recovered.
How we recover it
Electrical and controller diagnosis
Engineers test the power circuitry and controller to separate a fixable power fault from a failed controller or firmware crash.
Repair or restore the controller
Where possible, we repair the board or get the controller running in a state that lets it read its own flash, so its built-in encryption and mapping still apply.
Chip-off when the design allows it
On drives without controller-bound encryption, the NAND chips can be read directly and the data rebuilt by reversing the controller's scrambling and layout.
Rebuild the file system
From the recovered image, we rebuild the partitions and folders and extract your files.
Verify and return
Recovered files are checked so they open, then returned on a secure return drive.
Can the data be recovered?
Controller failures vary more than most. When the fault is in the power circuitry, or the controller can be brought back, recovery is often possible. When the controller is truly dead and the drive encrypts data with a key bound to that controller, recovery can be very difficult or impossible, because there is no way to read the chips without it. Data that TRIM cleared before the failure can't be recovered either. We'll tell you plainly what we find, and you pay nothing unless we recover your data.
Related guides
SSD Controller Failure — common questions
My SSD isn't showing up in BIOS. Is it definitely the controller?
Why can't you just read the memory chips directly?
Can you recover files I deleted before the SSD failed?
What does SSD controller recovery cost?
How much does ssd controller failure recovery cost?
Other failures we recover from
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