RAM not detected in the last two Slots W520 (lack of 8 GB memory)

Hello Lenovo community!

I need help with something grimly. I ordered my Lenovo Thinkpad W520 almost 4 years with 16 GB of RAM. In other words, that he always had the 16GB since I got it. I had recently made the switch from Windows 7 to 14.10 Ubuntu to OS. I like Ubuntu but realized the feature (games lol) for Windows 7 is a no brainer. I started my relocation and when I started Windows 7 it says I have only 8 GB of RAM!

Even the BIOS shows that there are only 8 GB... Why this is happening? I paid a lot of money for the extra RAM then why he would not be save this is beyond me. I did various diagnostics on my memory nothing helps. If this community could guide me in the right direction that would be great.

What is 4X4GB or 2X8GB? CPU?

Tags: ThinkPad Notebooks

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