Nvidia+Kernel Mode Driver

Has anyone any idea why every single day, without fail, all of a sudden the display goes opaque and all I see is these little pink square blotches all over the display, then the screen goes blank, then it kicks in, then I get a message box in the taskbar that Nvidia had a problem with Kernel Mode Driver. Just done a search on MS' Knowledgebase, found 64-bit driver but it then tells me it is already installed. Using Nvidia 327.23 drivers, so what gives here? Is it my Gigabyte 560Ti card that Gigabyte in the Ca., USA just parceled and sent back minus the original packaging when I sent it to back to them under warranty, or is it something else? This is now beginning to get really irritating as it just leaves FSX in a black screen although I can distinctly hear the sim running in that black abyss.