My Edge 1000 is no longer entering storage mode

Originally, when the Edge 1000 was connected to the PC, it entered storage mode, and it was possible to access the device memory and the card memory to transfer files like maps and courses. Recently, it stopped displaying both memories and even after forcing it by pressing the lap key while connecting the USB cable, it doesn't enter storage mode, however, it still charges the battery. Dear members, do you have any solutions? Has it also happened to you? Thanks.