I Am Experiencing Graphic Problems

When I Open Minecraft's Main Menu... It's Background/Panorama Turned Black.. (Attachment 1). I Ignored It Because I Was Working On A Resoucepack And Maybe I Did Something Wrong But When I Open My Creative Level.. It Became Like This... (Attachment 2). This Graphic Glitch Only Occur In Fullscreen

Steps to Reproduce:
I Don't Really Know How It Started... But When It Happened I Was Running In Minecraft 1.8.3... This Did Not Happen In Other Versions...