Hey,
I have "Arduino portenta H7 development board" but its not working. It's not detected by system also its microcontroller is heating. I have tried to get support from Arduino, But they didn't answer to my query.
As it is costly board, Can anyone suggest some ways to deal with this problem.
I do not have a fix. A suggestion would be to photograph front and back in high-resolution and post it here. Include details about the failure. Good luck.
Hi, try to contact Arduino Pro Support via Contact us
with details of the issue.
We got in touch with @harshad_robu
Successfully closed case, malfunctionning board
Yes, @PMarquinez Thank you for your help. I really appreciate you help.
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Appreciate the comment! 
Thanks