As you haven’t discussed what you probably did inside diskpart I’ll recommend you employ the blank cmd:
I might replica any information you need to stay from the cardboard to the PC & use diskpart to wash the SD card. If this fails then the cardboard has failed.
Proper click on Get started>Powershell with admin & input:
choose disk X (the place X is the collection of the SD card)
Now cross to disk control & layout the SD card.