Gigabyte error code 15 with 2 sticks of memory

[Mighty]

I won't go through the entire list of steps. Short version is, my GA-Z87X-UD5H was working fine for the last two years, except the CPU would overheat when pushed. Last month I installed a new cooler. No help.

So, tonight, I installed a new CPU. I thrashed around awhile, because I was boneheaded and didn't check to make sure I had the latest BIOS. But, I finally got it updated, and it no longer crashes when running Prime95.

So, that's good.

But, while going through all that, a new symptom cropped up. Seems I stumbled into a wild coincidence.

When I went back to the old processor, in order to update the BIOS, I started to get a "15" error code from the motherboard LED during boot. Searched around, and looked at the manual, and saw that it referred to memory. So, I pulled the stick out of slot 2, and it booted.

On a whim, I decided to go ahead and test the stick I'd pulled, and I swapped it into slot 1. It booted, again.

I've done multiple tests. Either stick in slot 1 works. Either arrangement of sticks in slots 1 and 2 hangs with "15".

Can anyone think of anything else to try? Or, am I suddenly in the market for a replacement motherboard?

Thanks,

Drake Christensen

Update 25/NOV: Since nobody had any other ideas, I pulled the trigger and ordered the exact same motherboard. I didn't want to confuse my current Windows installation with something that was *almost* the same.

 

[warhead0]

What if you tried using slot 3&4 for the RAM?

I don't imagine it will have any effect on performance to use the alternate slots.

 

[Mighty]

Good idea. I was too stuck with the idea that one stick should be in the farthest slot.

Unfortunately, same behavior. One stick in slot 3, fine. Sticks in slots 3 and 4, error 15.

Drake

 

[Mighty]

No other ideas?

Drake