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Effective troubleshooting is sequential and follows a specific logic to ensure efficiency and safety.

: Ensure the entire system works and take preventive measures to avoid recurrence. Download Depannage Guide Complet pdf

: If the device won't start, check the power cord, outlet, and surge protector. check the power cord

: Verify the exact symptoms. Ask: What was happening right before the failure? Download Depannage Guide Complet pdf

: Perform simple checks first, such as the "Process of Elimination".

: Ensure all cables (USB, HDMI, etc.) are securely connected and pins are not bent.