I started having issues with my Galaxy S4 this morning. The screen went black. After a few seconds the screen was speckled green and white with black lines. Since then it either gets stuck on the Samsung Galaxy S4 screen, continuously reboots, or if it successfully reboots it freezes after a minute and goes black or reboots. I've tried to boot into Safe Mode by tapping the menu button repeatedly but it doesn't work . I am able to boot into recovery mode and I cleared the cache but that didn't fix anything. Do I need to do a factory reset? Any idea what might be going wrong? The phone was warm to the touch before, not sure if that had anything to do with it. Also, when the phone is off, the blue LED light is glowing on and off. Thanks!