DevBoard not detected

Hello,

I have a problem with my nRF54L15-DK board - it is not visible by PC.

nRF54L15 mcu is apparently working fine with last uploaded program, as it is responding as expected when I press the buttons.

But my PC does not recognize the board anymore, it is not visible in device manager. I've tried different usb cables and several usb ports.

LD1 LED near the nRF5340 debugger flashes briefly just one time when I turn on the board.

Reset button also does nothing.

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