Lights up but unresponsive

Hi. My sons PS5 controller has stopped working. When the USB is plugged in, the orange light slow blinks once and 2 white lights appear below the touchpad. The controller is totally unresponsive.

I’ve connected it to my laptop and was able to update the firmware but it hasn’t resolved the issue. I’ve also tried several USB leads.

I’ve tried the soft and hard resets but no change.

Does anyone have a fix for this?