No I2C devices found

Could someone help me? I installed the display with I2C following the rules of the scheme for the cables, tested the continuity of the cables from the plates, everything ok. I run the I2C_scanner script and receive the message "No I2C devices found", suspicious of a defect in the card, I received another card, the same error. I installed on Linux initially, as it is my preferred system, to confirm I also installed on Windows10, the same problem appears. What could it be? Thank you

(deleted)

tested on two I2C cards and the problem remains. The I2C scanner script is from the official Arduino website. Tanks :)

(deleted)