Recently for no reason it said there was a problem with the CMOS battery. After taking it out and putting it back in it still blinks yellow 4 times and then turns off and then it turns on again. It doesn’t blink at all, all the fans turn on including the ones on the GPU but I do not get any video output? I have checked over the GPU there is no damage to the GPU. I have checked all the cables being plugged in properly and it still won’t give me any video output?