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DIAGNOSTIC NOTE

Tablet: Keyboard Not Working

Possible cause: motherboard. Start with low-risk checks and avoid disassembly unless trained.

Decision flow (safe)

  1. Reproduce the symptom reliably.
  2. Check software/driver causes first.
  3. Confirm if motherboard-linked signs are present.
  4. Escalate to service when risk is high.

Directional cases

  • Brand sample: Lenovo · confidence high · risk medium
  • Brand sample: Lenovo · confidence low · risk low