USB Flash Drive Data Recovery
USB drive unrecognised, broken or corrupted? Our Swiss laboratory recovers your data with a free diagnosis in 3 hours — even from the most complex monolithic designs.
How do we recover data from a damaged USB flash drive?
USB flash drive data recovery involves extracting files stored in NAND Flash chips, even when the connector is broken, the controller has failed or the file system is corrupted. A USB drive consists of three components: the circuit board, the controller and one or more memory chips. Any of these can cause a failure.
At our laboratory in Ins, Switzerland, our engineers use specialised tools to access the memory chip contents directly, bypassing the controller. This approach overcomes most electronic failures. When necessary, we desolder the NAND chips and read them individually on dedicated readers.
For monolithic USB drives (a single moulded block integrating controller and memory), we use an alternative method by soldering directly onto the circuit board to bypass the controller. Since 2006, SOS Data Recovery has processed over 11,300 media with a pricing model where 80% of the cost is charged only if your data is recovered. We are CyberSafe certified and CyberSafe partner and rated 4.5/5 on Avis Vérifiés (249+ reviews).
What failures affect USB flash drives?
Recognise one of these situations? Contact us for a free diagnosis in 3 hours.
Why is the USB connector broken or bent?
The connector is physically damaged and the PCB traces are torn. Micro-soldering in our laboratory restores the connection and provides access to the data.
Why is your USB drive no longer recognised?
The computer does not detect the drive or displays an error message. Usually caused by a faulty controller. Direct reading of the NAND chips bypasses this issue.
What to do after water damage or heat exposure?
Prolonged contact with water or high temperatures can damage electronic components. NAND chips are often recoverable even when the circuit board is damaged.
How to recover deleted files or a formatted drive?
Accidental deletion, formatting or file system corruption. Do not write anything to the drive to maximise recovery chances.
What happens after a USB power surge?
A power surge through the USB port can burn out the controller while leaving the memory chips intact. Desoldering and direct chip reading enable recovery.
How to recover data from a monolithic USB drive?
Monolithic drives (a single moulded block) require specialised techniques: direct soldering onto the board to bypass the controller and access the data.
How does data recovery work?
From free diagnosis to secure delivery — a transparent 4-step process, entirely performed in our Swiss laboratory.
Free diagnosis within 3 hours
Send your media by secure post, drop it at one of our 30 collection points across Switzerland, or bring it directly to our laboratory in Ins. Our team performs a full analysis within 3 hours of receipt — free and with no commitment.
Transparent quote before any work
You receive a detailed quote outlining the type of failure, recovery chances and exact cost. You approve before any work begins. Full payment on success — only attempt costs are charged if recovery fails.
Recovery under ISO 5 laminar flow
Our technicians work under ISO 5 certified laminar flow with specialised tools (PC-3000). Your data never leaves our CyberSafe-certified and CyberSafe partner Swiss laboratory. Duration: 2 to 10 business days depending on complexity.
Secure delivery of your data
Your recovered data is delivered on a new encrypted drive, or via secure download according to your preference. Original media can be destroyed on request to guarantee confidentiality.
Has your USB drive model been recovered before?
Thousands of USB drive models referenced in our database. Check whether we have already recovered a model identical to yours.
Frequently asked questions
Our specialists answer the most common questions.
If you encounter a problem with your USB drive, absolutely avoid these actions:
When your USB drive is no longer functional, two types of failures are possible: physical (broken connector, damaged component) or software (corrupted file system, bad sectors). In both cases, each additional manipulation increases the risk of permanently damaging the electronic components and losing your data irretrievably. Entrust your drive to a data recovery specialist at the first signs of malfunction.
- Do not remove the drive without ejecting it — Abrupt removal interrupts ongoing transfers and can corrupt the file system, making the data unrecoverable.
- Do not disassemble the drive yourself — Opening the case exposes the electronic components to irreversible damage without specialized equipment.
- Do not format it — Formatting overwrites existing data; even a software failure can be resolved without formatting by a professional.
- Do not force the USB connection — Forcing the connector can bend or break the internal pins, turning a repairable software failure into a definitive physical failure.
- Do not solder new components — Any soldering intervention without professional equipment irretrievably destroys the drive's circuits.
The USB drive LED is no longer lighting up
The LED on a USB drive is a built-in indicator light that signals the activity and power of the storage device. When the LED on your USB drive no longer lights up or flashes abnormally, this indicates an internal malfunction. This problem usually stems from an internal power failure or, in most cases, a damaged internal electronic component (controller, flash memory, or circuit board).
A lit-off LED does not necessarily mean that your data is lost. A professional can often recover files even from a USB drive with hardware failure.
The USB drive connector is broken
A broken USB connector is a physical failure that prevents the USB drive from establishing a stable connection with a computer, exposing the stored data to the risk of permanent inaccessibility if inappropriate intervention damages the internal memory chips.
Do not attempt to force the damaged connector or open your USB drive to resolder the connector yourself: according to data recovery specialists, more than 60% of DIY repair attempts on USB connectors worsen the damage to internal components, making data recovery more complex and costly.
Gently remove the USB drive from the computer if it is still connected, avoiding any lateral pull that could worsen the break. Keep all fragments of the broken connector and entrust everything to a data recovery specialist: a professional has the appropriate tools to directly access the memory chips without going through the faulty connector, thus maximizing the chances of recovering your files intact.
USB Drive Damaged by Flood and/or Fire
A USB drive damaged by fire or flood is a storage device that has suffered physical or electronic damage caused by heat, flames, or moisture. These disasters can cause three types of critical failures: melting of internal components (connector, circuit board), the presence of residual moisture inside the case, and failure of the control electronics, making the data inaccessible without specialized intervention.
Contact a data recovery specialist immediately. A professional has the appropriate equipment (cleanroom, diagnostic tools) to accurately assess the extent of the damage and carry out the necessary interventions safely, maximizing the chances of recovering your data.
USB drive broken into pieces
A USB drive broken into pieces is a physically fragmented storage device whose internal components, including the NAND flash memory chip, may remain functional despite the external damage. If your USB drive is broken, handle the pieces as little as possible: any attempt to glue or solder the fragments, or to extract the internal components yourself, risks permanently damaging the memory chip and making data recovery impossible.
Collect all the pieces of the USB drive, even the smallest ones, and immediately place them in an anti-static bag to prevent any further electrostatic discharge. Then entrust everything to a professional specializing in data recovery: in most cases, the memory chip remains intact after a physical break, and a qualified technician can desolder the chip and recover your data with a high success rate.
USB drive is no longer recognized by Windows / Mac OS
A USB drive not recognized by Windows or Mac OS is a hardware or software problem that prevents the operating system from detecting and mounting the storage device. According to Ontrack data recovery data (2024), approximately 35% of USB drive failures are software-related (file system corruption, partitioning error), while 65% are related to physical failure of the internal controller or NAND components.
The most frequent causes are:
- Partitioning problem – The partition table is corrupted or missing, making the drive unreadable without damaging the data.
- Incompatible or corrupted file system – An interrupted format or incorrect ejection can corrupt the file system (FAT32, exFAT, NTFS).
- Internal controller failure – The USB drive's controller chip is damaged, preventing any communication with the USB port.
- Obsolete or faulty USB driver – Under Windows, a corrupted USB driver can block device detection.
Do not reformat before attempting to recover your data with a dedicated tool (e.g., Recuva, TestDisk) if the drive contains important files.
USB drive is recognized but not accessible
A USB drive that is recognized but inaccessible is a storage device detected by the operating system, visible in the Device Manager or File Explorer, but whose contents remain unreadable or inaccessible.
Two main causes explain this problem:
- Software partitioning issue — The partition table or file system (FAT32, exFAT, NTFS) is corrupted, making the data unreadable without physically damaging the media.
- Physical failure — The NAND memory chips or the USB controller are damaged, preventing any reliable communication between the drive and the operating system.
Never format before attempting data recovery, as this operation permanently erases the contents of the drive.
When your USB drive is no longer functional, two types of failures are possible: physical (broken connector, damaged component) or software (corrupted file system, bad sectors). In both cases, each additional manipulation increases the risk of permanently damaging the electronic components and losing your data irretrievably. Entrust your drive to a data recovery specialist at the first signs of malfunction.
- Do not remove the drive without ejecting it — Abrupt removal interrupts ongoing transfers and can corrupt the file system, making the data unrecoverable.
- Do not disassemble the drive yourself — Opening the case exposes the electronic components to irreversible damage without specialized equipment.
- Do not format it — Formatting overwrites existing data; even a software failure can be resolved without formatting by a professional.
- Do not force the USB connection — Forcing the connector can bend or break the internal pins, turning a repairable software failure into a definitive physical failure.
- Do not solder new components — Any soldering intervention without professional equipment irretrievably destroys the drive's circuits.
The LED on a USB drive is a built-in indicator light that signals the activity and power of the storage device. When the LED on your USB drive no longer lights up or flashes abnormally, this indicates an internal malfunction. This problem usually stems from an internal power failure or, in most cases, a damaged internal electronic component (controller, flash memory, or circuit board).
A lit-off LED does not necessarily mean that your data is lost. A professional can often recover files even from a USB drive with hardware failure.
A broken USB connector is a physical failure that prevents the USB drive from establishing a stable connection with a computer, exposing the stored data to the risk of permanent inaccessibility if inappropriate intervention damages the internal memory chips.
Do not attempt to force the damaged connector or open your USB drive to resolder the connector yourself: according to data recovery specialists, more than 60% of DIY repair attempts on USB connectors worsen the damage to internal components, making data recovery more complex and costly.
Gently remove the USB drive from the computer if it is still connected, avoiding any lateral pull that could worsen the break. Keep all fragments of the broken connector and entrust everything to a data recovery specialist: a professional has the appropriate tools to directly access the memory chips without going through the faulty connector, thus maximizing the chances of recovering your files intact.
A USB drive damaged by fire or flood is a storage device that has suffered physical or electronic damage caused by heat, flames, or moisture. These disasters can cause three types of critical failures: melting of internal components (connector, circuit board), the presence of residual moisture inside the case, and failure of the control electronics, making the data inaccessible without specialized intervention.
Contact a data recovery specialist immediately. A professional has the appropriate equipment (cleanroom, diagnostic tools) to accurately assess the extent of the damage and carry out the necessary interventions safely, maximizing the chances of recovering your data.
A USB drive broken into pieces is a physically fragmented storage device whose internal components, including the NAND flash memory chip, may remain functional despite the external damage. If your USB drive is broken, handle the pieces as little as possible: any attempt to glue or solder the fragments, or to extract the internal components yourself, risks permanently damaging the memory chip and making data recovery impossible.
Collect all the pieces of the USB drive, even the smallest ones, and immediately place them in an anti-static bag to prevent any further electrostatic discharge. Then entrust everything to a professional specializing in data recovery: in most cases, the memory chip remains intact after a physical break, and a qualified technician can desolder the chip and recover your data with a high success rate.
A USB drive not recognized by Windows or Mac OS is a hardware or software problem that prevents the operating system from detecting and mounting the storage device. According to Ontrack data recovery data (2024), approximately 35% of USB drive failures are software-related (file system corruption, partitioning error), while 65% are related to physical failure of the internal controller or NAND components.
The most frequent causes are:
- Partitioning problem – The partition table is corrupted or missing, making the drive unreadable without damaging the data.
- Incompatible or corrupted file system – An interrupted format or incorrect ejection can corrupt the file system (FAT32, exFAT, NTFS).
- Internal controller failure – The USB drive's controller chip is damaged, preventing any communication with the USB port.
- Obsolete or faulty USB driver – Under Windows, a corrupted USB driver can block device detection.
Do not reformat before attempting to recover your data with a dedicated tool (e.g., Recuva, TestDisk) if the drive contains important files.
A USB drive that is recognized but inaccessible is a storage device detected by the operating system, visible in the Device Manager or File Explorer, but whose contents remain unreadable or inaccessible.
Two main causes explain this problem:
- Software partitioning issue — The partition table or file system (FAT32, exFAT, NTFS) is corrupted, making the data unreadable without physically damaging the media.
- Physical failure — The NAND memory chips or the USB controller are damaged, preventing any reliable communication between the drive and the operating system.
Never format before attempting data recovery, as this operation permanently erases the contents of the drive.