THEIR LED LIGHTS WON'T TURN ON!

Ugh, this is so frustrating! I need my LED lights to work, but they just won't turn on. I've checked the fixtures - they seem okay. Maybe the wall switch is {the{ problem? I don't remember what else to do! Any ideas would be greatly appreciated! Troubleshooting Faulty LED Lights When your LED lights start to fail, it can be a frustrating experi