Firestick Won't Turn On: How to Fix It
Check the power source
Make sure the Firestick is using the original power adapter, not a USB port on your TV. USB ports often do not provide enough power for Firestick.
Check the HDMI connection
Remove and reinsert the Firestick into the HDMI port. Try a different HDMI port. Check if your TV is set to the correct input.
Check the remote
Replace remote batteries. Point the remote directly at the Firestick. Try pressing any button and wait 30 seconds.
Try a different TV
If possible, plug the Firestick into another TV to see if the issue is the Firestick or the TV.
Factory reset via remote
If the Firestick is on but the screen is blank, try holding the Back and Right buttons on the remote for 10 seconds to enter recovery mode.
Contact support
If none of these work, the Firestick may be defective. Contact Amazon support if under warranty.