If Beoplay H100 are connected to a USB-C cable, disconnect, then reconnect the cable and try again. Ensure that the audio output is set correctly on the connected device.
If connected by Bluetooth, your Beoplay H100 have a Bluetooth range of up to 10 meters (in line of sight). However, Bluetooth connectivity might be affected by other active wireless devices in the nearby area (e.g., mouse, keyboard, mobile phone, laptops, or 2.4 GHz routers). Try to keep the headphones away from other active wireless devices.
If your Beoplay H100 are still unresponsive, find out how to reset them here.
