I was trying to upgrade my old 8gb ram into my friends computer but when i went to start it up it wouldnt get past dell loading screen. It would stop about 30 percent of the way through. I checked specs for mother board and they mach for the ram. The old difference from the old ram other than the gb is the voltage was 1.35 in the old and 1.5 in the new. When i reinstalled the old ram it started right back up.