i have 2 streaming stick+ that are doing this. it happened 2 days apart. first one quit, replaced the batteries, its started screaming and will not work. Then 2 days later, the other did the same. a bit upsetting, as these are fairly new devices that I now must replace. Ive not had the best track record with Roku devices, they seem to become problematic, as I have had to replace devices in the past due to glitches or lack of response.