Sorry if this is answered elsewhere, but I don’t have days to comb through all of the “cortex not working” threads to find an answer. I have never had this before.
My cortex is powered and fine when connected to computer. However, there is not power when connected only to a battery (no lights whatsoever). Confirmed it isn’t the battery. Was just one cortex. Now a second. I can’t help but think the kids have done something. Can you please help?