my board is unable to detect when I flashed it after that led is glow is not glowing plz help me

[HPunm.1]

earlier using st-link for debugging that time it was not showing anything on the display and the blacklight was also not flowing then using stlink utility flashed the board, now not is been detected so please me regarding this

[Tesla DeLorean]

What board and STM32 are you talking about?

What exactly is the error reported?

Can you perhaps use current tools like STM32 Cube Programmer rather than the Utilities?

If it can't find the Target, can you try Connect Under Reset method?​

[HPunm.1]

I am using STM32H745I--DISCO and STM32 cube ide1.11. we are not able to detect the com port and we are not able to load the code from stlk jumper and also the LEDs are not glowing can please send the default firmware file (.exe )

[Tesla DeLorean]

Did it work at some point and then stop?

Make sure to use a quality cable and connect to the right USB connection.

Charging cables are not suitable.

Is Windows seeing the board in Device Manager?

If it worked previously what did you do that might have changed that?

Keep the board off metal or conducting surfaces.​

[MM..1]

Hmm this board maybe isnt for you ... but check JUMPER and use only this con to PC

[Tesla DeLorean]

STM32Cube\Repository\STM32Cube_FW_H7_V1.10.0\Projects\STM32H745I-DISCO\Demonstrations\Binaries\STM32H7xx_EEMBC.hex

[HPunm.1]

I have done all those ​step which you have mentioned and used the jumper at the right place but the issue not resolved yet. I am doing last three four weeks

[MM..1]

Somethink is bad , you need know what ...

measure board and repair .... Discovery kits with STM32H745XI and STM32H750XB microcontrollers - User manual

[Tesla DeLorean]

Does sound like you damaged it, but helps to just answer questions

If you can't see the ST-LINK/V3 in Device Manager, good chance you've damaged the STM32F723 or it's power supply.

Pull a schematic for the board, and work your way through the circuit. Not a lot that's particularly user-serviceable, but you could at least check power at various nodes in the circuit, and determine if other parts of the board are viable, or not.

[Tesla DeLorean]

You flashed the board with what?

An ST-LINK firmware update?

An application you built?