I am thinking of giving some of my old Ram to my dad for his computer but I am not sure if it will be compatable, so i want to try it out in his rig before i order more for my computer ( Space issue) So i want to know if i put some of my Ram in my dad computer could it in anyway mess up any files on his computer? he is doing his taxes right now and is really concerned. Could it mess anything on his computer up?