After using ST-LINK to download the USB_Device program to STM32H747I-DISCO, after pressing the reset button, no enumeration appears, and the enumeration can be successful only after the power is turned off and on again.

[XW.1]

The example named STM32Cube_FW_H7_V1.9.0.

[Walid ZRELLI]

Hello @XW.1​ ,

Welcome to ST Community 🙂

Could you please provide the name of the example where you found the problem?

Thanks in advance

BeST Regards,

Walid