Minecraft white flickering?

So my computer is amazing it can run any game max settings but the company that gave me my PC added a overclocking thing. It doesn't really bother it but my minecraft constantly flickers white and stuff all over my screen. I have watched many videos and I do it all but it doesn't help. I have went to the BIOS and I clicked load optimization settings and save this didn't help at all. I have turned off threaded optimization and I'm running minecraft in compatibility mode in windows 7 (I have windows 8.1) I need to know how to fix it please! Please give me a step by step walk through to fix it.