Emergency Checklist: What to Do When You Lose Data

10 step-by-step actions, a DO / DON'T table, and a decision tree to know whether to try software or go straight to the lab.

✓ 10 emergency steps ✓ DO / DON'T table ✓ Decision tree

⚠ EMERGENCY — Quick response

If you have just lost data: 1) Turn off the device NOW. 2) Do not install anything on the affected drive. 3) Do not open the hard drive. 4) Write down what happened. 5) Call a professional lab: 900 899 002 (free). Every minute of use reduces the chances of recovery.

The 10 emergency steps

  1. 1

    Turn off the device immediately

    Disconnect the power supply, USB cable, or turn off the phone. On SSDs with active TRIM, data can be erased within minutes.

  2. 2

    Do not turn on or restart

    Each boot triggers automatic writes (journaling, swap, logs) that overwrite deleted data.

  3. 3

    Do not install recovery software on the affected drive

    Installing programs writes new data over the lost files. If you want to try software, do it from ANOTHER computer.

  4. 4

    Do not open the hard drive

    HDDs have nanometre tolerances. Opening them outside a clean room introduces particles that scratch the platters.

  5. 5

    Write down the symptoms

    Clicking? Not detected? Accidental deletion? Dropped? Error message? This information speeds up the diagnosis.

  6. 6

    Identify the type of failure

    Logical: deletion, formatting, corruption. Physical: noises, clicks, won't boot, impacts. If physical, go straight to the lab.

  7. 7

    Contact a professional laboratory

    Look for: ISO Class 5 clean room, ISO 9001/27001 certifications, PC-3000, «no data, no fee» policy. Free phone: 900 899 002

  8. 8

    Request a free diagnosis

    A reputable lab diagnoses within 4 hours and provides a fixed-price, no-obligation quote.

  9. 9

    Do not accept quotes without a breakdown

    Demand fault detail, technique, timeframe, and result guarantee. Be wary of «fixed» prices with no prior diagnosis.

  10. 10

    Ship the device safely

    Anti-static packaging + cushioning + rigid box. RecuperaTusDatos offers free home collection across Spain with packaging and insurance included.

DO / DON'T table for data loss

✔ DO ✘ DON'T
Turn off the device immediately Continue using the computer
Write down the symptoms and what happened Restart several times «to see if it works»
Contact a professional laboratory Install recovery software on the affected drive
Pack the drive with anti-static protection Open the hard drive casing
Demand a fixed-price quote with a breakdown Accept quotes without diagnosis
Verify the lab's certifications (ISO) Trust «technicians» without a clean room
Ask for «no data, no fee» policy in writing Pay upfront without guarantees
Stay calm and act quickly Try to repair the drive using YouTube

Decision tree: software or professional lab?

Does the drive make strange noises?

(clicks, buzzing, grinding, beeping)

YES → LAB

Physical damage. Software will make things worse.

NO ↓ continue

Has the drive been dropped or hit?

YES → LAB

Possible internal mechanical damage.

NO ↓ continue

Is the drive not detected by the BIOS/system?

YES → LAB

Electronic or firmware failure. Requires PC-3000.

NO ↓ continue

Is the data very important or irreplaceable?

(unique photos, accounting, critical database)

YES → LAB

Don't risk it. A professional maximises recovery.

NO ↓ continue

You can try recovery software

Connect the drive as a secondary drive on another computer. Use Recuva, R-Studio, or PhotoRec. If you don't recover data within 30 minutes, stop and contact a lab.

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