I have sent the memory back and had replacements so I am sure it is not an issue there. Get beep error code saying no memory installed Machine sarts and runs fine, but only shows 4gb memory in both BIOS & windows The two i have are crucial 12800 as it happens, but even alone the motherboard is not recognising them. My apologies, maybe i wasnt clear in my initial post - the details i posted there are of my current memory that works just fine, it is when i try and use the 2 sticks i have that are 8gb each it fails. They sell guaranteed compatible 8GB modules. If you live in the UK or Europe see the following link. They sell guaranteed compatible 8GB actual issue is that you have installed two memory modules that are not absolutely identical. But remember don't upgrade with specs alone. The Odense motherboard that is installed in your desktop PC does suport a max of 16 GB.

They are modules guaranteed to be compatible with your PC. If you want 8GB and the upgrade to work then you need to install a pair of Crucial 4GB DDR3L-1866 UDIMMĬT51264BD186DJ modules. They stand to lose their reputation when they guarantee compatibility and you discover that it is not the case. Unless your pockets are infinitely deep and amount of patience you have is infinite, let the vendors and memory manufacturers do the testing. Matching memory modules with specs alone, just does not always work, as you have discovered. In the information you have provided, I see that one is Samsung and the other is Crucial. JEDEC #6 800.0 MHz 11.0 11 11 28 39 actual issue is that you have installed two memory modules that are not absolutely identical. It has been suggested to me there is a setting in the BIOS to restrict hardware changes (large companies use it to stop people taking upgrades home) but i cant see anything.įrequency CAS# Latency RAS# To CAS# RAS# Precharge tRAS tRC Voltage It has had an upgrade already and I have the 12800 spec ram, details below.

Speccy dram frequency