Wrong ram slots

[vkarakostas]

Hi,

PC specs: CPU : i7-6700 non k , MOBO: GIGABYTE H170 HD3 REV 1.0,COOLER : hyper evo 212x, PSU: corsair rm750x, RAM : 2x8 gskill ripjaws 2133, GPU: gtx 1070,1 ssd(boot drive), 1 hdd.

I BUILT THIS PC 1 YEAR AGO.

My pc crashed while i was gaming and i turned it off using the power button on my case.
When i tried to power it on again it went in a boot loop without even posting(no video signal).
Then i took it out of the case and reassembled it outside (I ressitted the cpu(all pins good,all cables plugged in properly) and it worked fine .
I ran heaven and prime 95 5 hours no crash .Also i ran memtest for the two sticks using the first ram slot each time and i got no errors.
So i put it back in the case and it boot loops again.
After that i take out the second ram stick and pc boot properly and it ran 1 week with no problems.(8gb only).

The strange thing is that the bios shows that the ram stick is installed on the 4 slot instead of 1.Gigabyte's faulty bios?.I am using the first slot from the right . .

bios version f5

When i reinstalled the second ram stick it boot into windows with no problems.Then i turn pc off and i ran memtest fow a while. After that it boot loops again.

 

[Karadjgne]

Cpu- 1- 2- 3- 4- that's how ppl read the slots. Some software refers to it as dimm #0, #1, #2, #3. But it starts at the cpu.

You tested both ram sticks in 1 slot only. Test 1 stick in slot 1. If it works, test in slot 2 etc..

From the sounds of things there's 2x distinct possibilities, first being a bad slot, either its not making a good connection or the slot itself has a busted trsce/solder joint. Second is pins under the cpu, it only takes 1 not being perfectly aligned to skip memory access and apply voltage incorrectly, messes with the memory controller in the cpu.

 

[vkarakostas]

Should i flash the bios?

I found this post at gigabyte forums :
''Last week I finished my 1st build using the GA-B250M-DS3H motherboard. Like you, I followed the manual and installed 2 x 4gb SDRAM in DIMM slots 1 & 2. On this board these are color-coded light grey and clearly labeled: DIMM_4,_2,_3, _1 from CPU to edge of the board. However, the BIOS shows the memory to be in slots 2 & 4! CPU-Z shows memory in 2 & 4, dual channel. Confused I submitted a support ticket to Gigabyte.
Here is their response to my question concerning this discrepancy: "The labeling does not mean the bios reading will be the same, please disregarding the labeling and bios dimm listing. It appears that both memory are being detected, any particular issue you are experiencing?"
When I submitted another question for clarification I received this:
"Your fine, no need to worry about the memory detection as the labeling on the board it just a label number."
Neither answer clears this issue up for me.
Either the motherboard is mislabeled or BIOS software is incorrect? Wish I could confirm that my sticks are indeed in slots 1 & 2.''

 

[Zerk2012]

I would increase the memory voltage by 0.02 volts and try it like that.

 

[Karadjgne]

The difference is what's labeled. Ram stick (DIMM) #4 is in slot #1. DIMM #2 is in slot #2. DIMM #3 is in slot #3 and DIMM #1 is in slot #4. It's a gigabyte labeling thing as far as what ram is read by the memory controller, the actual slots being a visual difference. On almost all 4 slot boards, dual channel ram is placed in slots 1/3 or 2/4 (cpu-1-2-3-4) but according to the memory controller, it's reading 2x sticks, that being the first stick and 2nd stick with slot #4 having the first stick recognised, slot #2 being the second stick recognised. If you look at cpu-z on my Asus mobo, I have 2x sticks in 2/4 but cpu-z recognizes them as DIMM #0 and DIMM #3, as on cpu-0-1-2-3.

Gigabyte might label the slots 4-2-3-1 but that's only for you to place any ram. 1 stick goes in slot #4, with 2x sticks it's 2/4, with 3x sticks it's 2/4 +3 and with 2 sets of dual channel it'd be slots 2/4 + 3/1 corresponding to 1-2 and 3-4.

Not a hard concept, but confusing unless you look at the bigger picture, not the label detail.

 

[vkarakostas]

Check these photos : https://imgur.com/a/3NObj