Motherboard suddenly won't detect installed RAM

zantaff · Mar 4, 2015

ASUS P8Z77-V Pro

I left my computer on sleep when I went out, I came back and it had shut down. When I tried turning it back on, I was greeted with the “Cannot detect any RAM installed” beep code (One long two short).
Since the computer wouldn’t even boot, I had limited options.
So I took everything out. I cleaned the front and back of the mobo, cleaned the RAM contacts, switched the positions (2-8GB; 2-2GB modules) and used that MemOK button. Nothing. (If you’re wondering why I have 20GB of ram, it’s because I use Autodesk applications and other similar programs.)

Is there anything I can do to remedy this issue? (Short of buying all new ram.)
I’m wondering what happened, and am thinking there may have been a power surge or something similar, but that doesn’t really explain why only the ram modules are not working.

~Thanks

Phillip Corcoran · Mar 4, 2015

First test the RAM modules (one at a time) with Memtest86 on a bootable CD. The CD image (free version) is here:
http://www.memtest86.com/download.htm

If you don't have any burning software that can deal with CD images to create the CD, use this:
http://filehippo.com/download_imgburn

Then after removing all but one stick of RAM, boot your PC from that CD. Memtest starts running automatically.
Any errors will usually be found within the first five passes of the test. Press <Escape> to halt Memtest at any point.

Test other RAM sticks the same way, one at a time (that's so you know which ones are faulty).

zantaff · Mar 4, 2015

I tried testing the memory sticks in every possible configuration, no dice. Since I don't really have a good way to test my ram (this computer is a MacBook) that option was out as well.
So, I ran over to the electronics store and picked up some new 2x4GB PNY Memory.
Plugged the new sticks in and got the same results - which leads me to conclude that the whole motherboard is dead.

Any suggestions for a comparable replacement? I built this PC from scratch, but have never needed to take out and replace the mobo before. Anything in particular I should look out for?

Phillip Corcoran · Mar 4, 2015

I'm not familiar with what's available as regards new motherboards. I suggest you start a new thread, being sure to mention that you need a recommendation for a good replacement for your current ASUS P8Z77-V Pro.

I have suggested starting a new thread as it's more likely to get noticed compared to a thread which has already had two replies.

zantaff · Mar 4, 2015

Thanks Phillip.

Update: I did a CMOS reset. Same results.
I finally convinced a friend to let me inside his PC, and my ram is working fine. So unless there are any other practical solutions it looks like a new mobo for me. Time to decide what to get.

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Motherboard suddenly won't detect installed RAM

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