STM32F746 Discovery default screen reset

[MMalv]

I am new to Electronics and recently bought STM32F746 Discovery Board and connected to to my laptop using USB cable to STLink connector pin. Main screen light up showing programs pre save in it. and uploaded run LED blink code and then screen went off only showing white screen with no item.

Can anyone guide how to reset it again to have screen showing all item back?

[Tesla DeLorean]

You'd need to flash back the original firmware that was running in the device.

Use the ST-LINK Utility or STM32 Cube Programmer to write the F746_DISCO_FLASH.BIN