DRAM Led constantly red, im unsure what to do next. Asus Z97-A.

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falconr

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Mar 21, 2017
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Hi.
I got a problem with my memory I think. I think the problem got it's origin in a overclockingfailure on my ram I had 5-6 weeks ago where my computer crashed and it had me to reset BIOS. No crashes since! Then for a couple of weeks ago (2-3) my computer didn't wanna work with me and start properly. What happened was that everything inside (fans etc) were running but I wouldn't get a picture on neither of my screens. After 2/3 restarts it would just work perfectly fine, and since I study I haven't had the time to look into the problem. Today my computer wouldn't give me a picture at all, not even after several restarts so I decided to take a look at it:

DRAM-led is constantly RED. The first thing I did was doing the MEM-OK but it didn't help me. Then I tried with one/two sticks of ram in every combination, nothing. I tried changing my GPU to another one in case my gpu was dying, nothing. I even took out the battery for a few minutes and let BIOS reset. Still nothing.

The wierd part is that during all this testing the computer gave me a picture, 1 or 2 times after MEM-OK button on motherboard and maybe 2 times during normal restarts. (Take in mind I did about 40 restarts trying different things, got a bit frustrated).. I was able to boot two times and the other I couldnt get any longer then to BIOS. Went black when I "saved & exit" from BIOS. Boot prio looked good, and all 16GB Ram I had in at the moment showed up. Took a look in the memorysection and settings didn't seem strange to me.

What could this be? I am a bit worried that it's my motherboard since all memory showed up in BIOS. Im gladly taking all the help I can get with this one.. Thanks!

Specs: Asus Z97-A, Nvidia GTX 780Ti, i7 4790k, 16GB 1333mhz RAM, EVGA Supernova G2 850W
 
Solution
MeanMachine41
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MeanMachine41

MeanMachine41

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Hi falconr :)

As your DRAM_LED is lit red then post will not advance till rectified. Clear CMOS back to default then access your Bios. Update your Bios to latest revision if not already done so.

Go to the "Tools" section in Bios and obtain the SPD info of your RAM. (write them down)
Go to> Ai Overclock Tuner, default is "Auto" so try for "Manual" and if you have an XMP profile then try that or manually configure your RAM in "DRAM Timing Control" Use the settings for Primary Timings and Voltage as obtained from your SPD info. Sometimes a slight increase in Dram voltage is needed. use the +or- keys to increase voltage in .01 intervals till stable. Do not exceed 1.6V.

If then you can't get them to work, list the Part No of your modules or check if they are listed on the MB QVL list.
 
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falconr

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Hello Meanmachine41 and thank you so much for the answer. :) Today I had the chance to try your solutions out but It didn't make any different... Tried with another pair of ramsticks aswell... I found my part.no but Im not really sure what to do with it? AX3U1600W8G9-DB

Something is happening tho... Changed voltage to 1.52 from 1.50 and used X.M.P on 1600 mhz and it changes to 1066 or 800 mhz when I restart the computer. The voltage also changed to about 1.55 by itself just like the mhz. Is this happening because I use the memOK? And The memory OK button seems to help me get to bios almost every single time now aswell, from 2 out of 10 times till 7/10 times so far... But after save & exit in bios it wont boot and dram still solid red.

For example, just entered bios, did the X.M.P and changed volt to 1.53. After save & exit the computer actually booted so I shut it down to see if that was it. But then the dram led went red again, so I memOK and mhz is changed to 1066 and voltage to 1.55.

Thanks once again / Falconr!
 
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MeanMachine41

MeanMachine41

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Iv'e looked up your modules, they are ADATA XPG V1.0 16GB (2 x 8GB) 240-Pin (PC3 12800) with recommended Primary Timings at CL 11-11-11-28 at 1.5V

I have checked the MB QVL and ASUS have tested your modules at CL 9-9-9-24 at 1.5V

Your MB will have the SPD information in the TOOLS section of Bios so check that Primary Timings correspond to what the values have been set when using memOK.

You are close to getting them to work so try them with the Timings listed and increase DRAM voltage to 1.55V - 1.6V.
Your Bios has Dram Timing Control, so enter the SPD manually in Bios with what ADATA recommend and also try ASUS Timings with Dram Command Rate set to 2T. You may have to loosen the timings however i'm sure you should get them to work.
 
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falconr

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Thank you for helping me, and check the MB QVL!
I just tried this out, and when save & exit I went straight to booting! But I tried to restart the computer and dram led was red once again. Did memOK and Timings were set to 6-6-6-18 with 1.5V 800Mhz from 11-11-11-28 with 1.55V 1333 Mhz. Primary timings in the SPD information is 9-9-9-24 1.5V. :(
 
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MeanMachine41

MeanMachine41

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Somehow your Bios settings are not being retained when you save and exit. The only things I can think of are that your Bios update was not successful or the MB battery is dying.
Replace the CR2032 battery and reflash the Bios. You should be on Bios revision 2801
What method did you use to update Bios.?
 
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falconr

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Mar 21, 2017
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I did a reflash of the Bios and it seems like it did the trick. Im astonished since I updated it when the problem occured but I might picked the wrong version of it. Last time I flashed with a USB, just like now. Anyways got the 2801 now and seems to work for now.! Do I have the courage to clock my Dram to 1600 Mhz or should I just let them run in 1333? Anyways, thank you so much MeanMachine41. Big thank you for all the help! Appreciate it a lot!
 
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