Change of Memory, PC Won't Boot

Deleted member 1272578 · Sep 10, 2016

Hi there, I'm rather experienced when it comes to components but this has always been an issue and this time I can't seem to fix it like I have been able to before.

I just got a 32GB kit of RAM to replace my previous 16GB set and when I installed it my PC wouldn't boot at all, it just kept restarting infinitely. I put my old set in and it worked perfectly again, this is the second kit I've tried and I still get the same result.

I used to fix this problem by just swapping the DIMMs but that doesn't work this time.

Motherboard GA-X99-SOC Champion, processor i7-6800K, old memory CMK16GX4M4A2800C16, new memory CMK32GX4M4A2400C14.

Supahos · Sep 10, 2016

It's possible it's trying to run the new sticks at 2800 and they won't do it but rather unlikely, anyways set the memory back to 1333, swap sticks and then try the new ones,

Deleted member 1272578 · Sep 10, 2016

Supahos :

I'm running at SPD defaults at the moment, I've tried resetting the BIOS and that hasn't worked.

Supahos · Sep 10, 2016

Try each of the new sticks individually and ensure they'll all work by themselves, then see if pairs will work. If you can get to bios I have a few other tricks when is the restart loop? Pre or post os load attempt?

Deleted member 1272578 · Sep 10, 2016

Supahos :

Tried that, it's the same as when there's no RAM installed at all: gets to code 60 and shuts off, it's barely on for a second. Also tried using a stick of old and new, same result.

Supahos · Sep 10, 2016

So a single stick won't work? Or pairs?

mjslakeridge · Sep 10, 2016

Did you clear the CMOS? There should be a jumper on that board. Of course, do this with the PC unplugged.

Deleted member 1272578 · Sep 10, 2016

Supahos :

Nope.

mjslakeridge :

I did, there's a button for it.

mjslakeridge · Sep 10, 2016

Is your new memory a 4x8 kit?

Deleted member 1272578 · Sep 10, 2016

mjslakeridge :

Yes.

Supahos · Sep 10, 2016

If a single stick is causing an issue and you've tried more than one it almost has to be a compatibility issue, I'd update the bios and try again as well

mjslakeridge · Sep 10, 2016

Then it should work as I see that exact RAM is on the Memory Support List for that Motherboard. What is odd is the motherboard specs says it supports up to 64GB of ram maximum. Given that there are 4 Dimm slots, that would imply 4x16 sticks, yet the Memory Support List only lists 8GB and lower RAM sizes.

For your new RAM the Memory Support List shows the native frequency is 2133mhz. To run it at 2400mhz, do you have to enable XMP in the BIOS? You may know more about this than I do, just throwing out ideas.

Deleted member 1272578 · Sep 10, 2016

Supahos :

I'm already using the latest BIOS, there is a beta BIOS that has been around for a while now which lists official support for "Core i7 6000 series CPU" instead of just "Support 2016 Q2 coming new CPU", not sure if that would change things but I don't like using beta firmware.

mjslakeridge :

I usually run my current kit at 2400MHz without XMP, XMP messes with my base clock so I don't use it.

mjslakeridge · Sep 10, 2016

You might try XMP just to prove the new RAM is not defective (Highly unlikely as they would have tested them together to sell as a "kit").

I see there was an earlier BIOS version to accept 16GB sticks, so that clears up my earlier question. I guess the Memory Support List is just not up to date. Anyways since you are using 8GB sticks, it is a non-issue here.

Deleted member 1272578 · Sep 10, 2016

mjslakeridge :

I can't even get into the BIOS with the new memory.

mjslakeridge · Sep 10, 2016

Is your old memory a 2x8GB set? If so you were probably running in dual-channel mode. The motherboard supports quad-channel mode. You may have to enable XMP and quad-channel with the old memory, and then install the new memory. Again, you seem pretty experienced - I am just throwing things out there.

Deleted member 1272578 · Sep 10, 2016

mjslakeridge :

I posted the model number of my old kit, it's a 4x4GB set.

I'll try enabling XMP before changing memory, but I doubt it's going to work.

mjslakeridge · Sep 10, 2016

Sorry, I didn't look up the info about your old kit, was focusing on the new one. This has to be a "setting" issue, as it is highly unlikely that all 4 of the new sticks are defective, given that you have tried them one at a time also. When doing that test, did you use the DIMM slot specified for using only 1 stick? Maybe that doesn't even matter nowadays.

Deleted member 1272578 · Sep 10, 2016

I updated the BIOS and they work! Thanks for your help everybody.

mjslakeridge · Sep 10, 2016

Great! I was pretty sure it was software related.

Supahos · Sep 10, 2016

Glad to hear we got ya up and running. Bioses on ddr4 stuff are still rapidly changing, so it is an issue with newer kits in "older" boards

Change of Memory, PC Won't Boot

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