There are two red lights showing by the RAMs (Got dual CPU version). However there are no signs of errors in the OS X at all. However sometimes when I boot I get a blue screen but if I wait it out then it corrects the error code and continues to boot perfectly after a few minutes. It's been like this before I switched all RAM modules. However the boot problem has existed since before the red lights appeared. So I cannot figure out what this might be! Does anyone have a clue?