CHANGED RAM, NOW PC WONT BOOT?

[BrandonDaviesFX]

Hello Guys, so I’ve been running 8GB (2x4gb 2400mhz DDR3) ram for a few years now and decided I wanted to buy 16gb. So I bought sealed 16GB (4x4gb 1600mhz DDR3 and installed in into my pc. When I try and boot it it gets stuck in a loop of boot and shutdown but it doesn’t even turn the monitor on. I then try my old 8gb 2400mhz ram and that works, so I just think it might be as I’ve got 4 sticks now instead of 2 so I try 2 of the new 1600mhz sticks and that still does not boot up. Im wondering if its because its 1600mhz but I don’t see how that would affect it. Ive reset the CMOS but I have no clue what to do now.

[BrandonDaviesFX]

Ive just tried the 1600mhz ram by itself 8gb of it and it did not work, I then out of chance mixed 8gb 2400mhz and the 8gb 1600mhz together and it has worked??? very confusing, my motherboard is compatible so its frying my brain

[Rustys]

What is the make an model of the motherboard?

Some systems do not do well if you mix RAM like that. Could also be that the new RAM is not combatable with the motherboard.

[BrandonDaviesFX]

The motherboard is GIGABYTE GA-Z97x SLI… it works when I mix but doesn’t work if I just try and use the 1600mhz ram by itself

[Rustys]

Could be just reading the old RAM and using that and not the new.

Let me see what I can find

[BrandonDaviesFX]

I just checked my specs on my pc and its reading that I have 16gb now (mixed between new and old)

[Rustys]

Few things I would look at is were they in the correct slots?

Anything over clocked some times can play havoc?

Slim chance some time updating the BIOS can help. Making sure to get the proper one other wise you will have a wonderful paper weight.

Others may have other information to add @phillpower2 and @Bruce

[Bruce]

Gigabytes website on the Z979x-sli says is supports 1600Mhz.
so the speed is OK but the CLI on the new chips and general compatibility still needs to be verified.
the mere fact they don’t work, whether all 4 or just one (you have tried just one?) sort of proves the point though that they are non-supported.
why it is working when you mixed them together - that I can’t say.

my money is on a BIOS update - they usually increase the range of compatible hardware with each new version.

[phillpower2]

Any update BrandonDaviesFX?

[phillpower2]

Any update for us? This thread will be closed if not replied to within 48hrs.