So my Laptop was being Slow so i desided to upgrade my ram by adding new 8gig ram sick on top of my pre existing ram 8gigs. 

my system wont detect the newly installed ram but system wont detect 16 gigs and CPU-Z dose? Im failry new to this type of stuff and yes they are the same frequencies and all that. its making me mad that i spent 80$ on new ram that wont work. Some advice would be helpful thanks