Why Does an SSD Stop Working? Common Causes and Solutions

NAND Cell Wear

Each NAND flash memory cell has a limited number of write cycles — typically 1,000–10,000 depending on NAND type (SLC, MLC, TLC, QLC). When cells reach their limit, they can no longer reliably store data.

Modern SSD manufacturers specify TBW (Terabytes Written) — the total data volume the SSD can write before wearing out. For an average user, this is several hundred TB — sufficient for 5–10 years. However, intensively used SSDs (video editing, database servers) may wear out faster.

Checking SSD wear: use CrystalDiskInfo (Windows) or smartmontools (Linux/macOS) — they display SMART attributes including Wear Leveling Count and remaining drive life.

Controller Failure

The SSD controller manages data writing to NAND cells, performs wear leveling and provides error correction (ECC). Controller failure can result from:

• Firmware error — an update that started but didn't complete correctly • Electronics damage — power cut during writing • Manufacturing defect • Overheating

An SSD with a damaged controller typically disappears from the system suddenly or produces a detection error in BIOS. Sometimes it periodically appears and disappears. In this case, contact specialists immediately — remove the SSD and do not restart the computer.

Firmware Failure

SSD firmware controls all drive operations. Corrupted firmware can cause: SSD shows 0 GB capacity, not detected in BIOS, runs extremely slowly, periodically disappears from the system.

Firmware corruption can occur: during a failed firmware update, during a power cut while writing critical data, or rarely — spontaneously due to a manufacturing defect.

Professionals can restore firmware using specialised equipment (PC-3000, Flash Extractor) — this process requires direct access to NAND chips, bypassing the damaged controller.

What to Do When an SSD Fails

1. Power off the computer immediately — do not attempt to restart the SSD, as this can worsen the damage.

2. Do not write new data — the TRIM function on SSDs can quickly mark deleted cells for erasure.

3. Check SMART data (if the SSD is still accessible) — CrystalDiskInfo or the SSD manufacturer's diagnostic tool.

4. If the SSD is not detected in BIOS — do not attempt to fix it yourself. Consumer tools cannot restore a damaged controller or firmware.

5. Contact specialists — we have equipment for direct NAND chip access bypassing the damaged controller, allowing data recovery even from a non-functional SSD.