Motherboard not recognizing memory anymore

Posted by root on Super User See other posts from Super User or by root
Published on 2012-12-02T14:23:33Z Indexed on 2012/12/02 17:08 UTC
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memory

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motherboard

I bought some new RAM and installed it on my motherboard. But, the BIOS would not post. There's an LED on my motherboard that shows error codes, and it showed the error: No usable memory detected.

So, I removed the new memory and reinstalled the old memory, thus restoring the computer back to its original configuration. But, the BIOS still would not post, still giving the error: No usable memory detected.

I've ensured that the memory and power headers are seated properly. I've tried all possible combinations of memory slots, and I've also reset the CMOS, but the error remains the same. The computer was working fine before I tried upgrading the memory, and I originally assembled the computer myself.

What are some possible causes of this problem?

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