Black Screens With New RAM

jonogone · Jul 29, 2016

I just bought a new PC and am trying to upgrade the RAM, but when I put in the new sticks and boot it up I just get blank (black) screens. The fans spin up, and I get a flashing error "55" (Memory not installed).

To troubleshoot I tried installing only new 2 sticks in the same slots as the old RAM, then the other 2 slots, then 2 new sticks with 2 old sticks, but every combination just results in the same blank screens. My next thought is to change the speed settings in BIOS, but I'm not sure what to set them to, and I'd rather not reset the BIOS settings to default unless I absolutely need to.

Here are my computer's specs:
PowerSpec G425
Motherboard: ASRock Z170 Extreme4
Old RAM: G.Skill Ripjaws 16GB (2 x 8GB) DDR4-3000
New RAM: Corsair 64GB (4 x 16GB) DDR4-2666

Any thoughts/help would be greatly appreciated! Thanks in advance.

cin19 · Jul 29, 2016

Use two or even one new stick, if you can boot into the BIOS, set up the XMP profile, shut down the PC, then add the rest RAM.
If that does not work either, one of 4 RAM may have problem. May test the RAM one by one with MemTest86. http://www.memtest86.com/download.htm
If that does not work, you have to try clear the CMOS.
And one more thing, why do you need the 64GB? for video editing, for PS?

jonogone · Jul 30, 2016

cin19 :

Thanks @cin19,

After an evening of tinkering with the BIOS, per your suggestions, I was able to boot it up with the new RAM. I had to set the xmp speed to auto because 2666 wouldn't work. Now my problem is that I'm only running at 2133 while set on auto. I'm afraid to tinker with the speeds more because I have to clear the CMOS every time since I only get a black screen. Any thoughts on why 2666 isn't working? Is there another speed I should try with that RAM?

I need the 64GB for some pretty intensive motion design and VFX work. I constantly have multiple Adobe apps open as well as 3D software, and more/less constant rendering/RAM previewing. I need as much power/speed as I can get

cin19 · Jul 30, 2016

I was able to boot it up with the new RAM

Can you use all of them? May try run the MemTest86, or try manually set the RAM at 2400mhz in the BIOS. You should be able to run the RAM at 2666mhz with XMP, but I may be wrong because the OEM pc may do something in the BIOS, or the RAM may have problem.

jonogone · Jul 30, 2016

cin19 :

Thanks again for your prompt response, you're awesome.

You were right, 2400 works! All 4 sticks are working. I tried 2600 again, but again got the black screen.

Here are a couple of pictures of the BIOS settings when set to 2400. Maybe there's something I'm missing that is keeping the 2666 from working? I'm new to overclocking but want to get the most out of the sticks as possible.

https://goo.gl/photos/rL5QDwghaBBeGBSn7
https://goo.gl/photos/rt9huDyjT2XixQNn6

Also, here's the manual for my motherboard. Maybe that explains something I'm missing?
http://asrock.pc.cdn.bitgravity.com/Manual/Fatal1ty%20Z170%20Gaming%20K6.pdf

Thanks so much once again. You've been a huge help.

Tradesman1 · Jul 31, 2016

Do you have the latest BIOS? Any OC on the CPU? (may be needed to run the full 64GB). Might also need to add to the MC (memory controller) voltage

jonogone · Aug 2, 2016

Tradesman1 :

Thanks for the suggestions. I'm not on the latest BIOS, and I don't think the CPU is being OC'd. Right now the RAM is functioning, just not at it's full potential. I will tinker with OC'ing the CPU next. Are there any specific settings I should be paying attention to when I do so?

Tradesman1 · Aug 2, 2016

Initially simply enable XMP and select profile 1 - that should set them to proper settings, if that doesn't work then you would need to make voltage/timing adjustments

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