I'm getting above error both of the two STM32H735G discovery boards that I have. On both boards ST-Link worked fine for some time until I unplugged the ST-Link USB connection while the MCU was stopped at a breakpoint. Afterwards it seems impossible to get them back to live. As soon as connected it turns on backlight and shows a white display. The reset button seems to have no effect. It is hard to believe that both boards have a similar hardware failure all a sudden.
I'm out of ideas, can anybody help?
