m. b. Asus 758x-mx switching on my spare computer, (nothing connected), except graphics card,(and I have tried a different card) and one stick of memory, (I have tried another stick) it posted, I switched it of, a few minutes later I switched it on. It would not post fans spin , nothing on screen. Changed the pins left it for ten minutes, changed the pins back, Still no post, changed the battery, still nothing, tried a third battery Still no post left it. Next morning switched on, it posted, switched of then on again, No post. what is stopping it posting?