Go in to the bios and view your current memory.
On boot it should say press "a button" for system bios. That button can be del, F1, F2, F12
If you don't see that option, when you first power the computer on, press Tab sometimes they have the other screen blocked by a splash screen.
Once in the bios navigate to the memory options. Note though, changing stuff in the Bios with out knowing what you are doing can really mess up your computer.
