I had 1 8gb corsair vengeance in my PC but i just bought another one of the same exact ram stick and i put it in so i should have 16gb now but it still says i have 8. I checked my motherboard manual and the ram sticks are in the correct places. I also heard that it takes a couple restarts for your pc to recognize it but it has been 5 days now and ive done a lot of restarts and shut downs. Is there anything i can do to get the pc to recognize the ram stick?