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I7 rig will not post with 3 dimms filled

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  • Gigabyte
  • Intel i7
  • Motherboards
Last response: in Motherboards
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June 29, 2009 9:20:25 PM

help !
i7 rig will not post with 3 dimms filled
i have gigabyte extreme rev 1.0 bios f7

d0 i7 920

ocz 1600 pc12800 7-7-7 platinum
im trying with 6gb but i have total 12 gb , 6 x 2gb)

unfortunatly i gannot get this to boot with 3 dimms filled

it only works with 2

i am trying with dimm banks 1, 3, 5

not sure what to do

thanks in advance

thanks

More about : rig post dimms filled

June 29, 2009 9:59:03 PM

When Installing your Operating System (OS), you need only use 1 dimm and start off by placing it in slot #2. After you get the OS installed, then add the other 2 dimms in slots 4 & 6. Start computer up and go into Bios', then to where you can change your memory timings or leave at auto. Once that is done boot into Windows and then shutdown computer if it boots with all 3 dimms (6gb) and then add the other 3 dimms in 1, 3, & 5 slots. That should solve your problem. :) 
a c 177 V Motherboard
June 29, 2009 10:37:20 PM

Voodoo?
Related resources
June 29, 2009 10:49:22 PM

thanks for your reply

have tried the following

1 in bank 1 boots

2 in banks 1 , 3

works ok

works with ram in bank 1,2,3,4,5

not 6
a c 177 V Motherboard
June 29, 2009 10:54:02 PM

Do your 1-5, OK, 6 no-go results come from individual sticks in individual slots; or can you get all the RAM working at once with the exception of the last one?

Have you adjusted the DRAM voltage in the BIOS at all?
June 29, 2009 11:12:05 PM

all ram works in diffrent combinations

sticks are confirmed working

only the 6th (last ) dimm is empty

yes here is the the timings

9-9-9-24 ram is ocz platinum 7-7-7-? rated
2t
1.64v
June 29, 2009 11:17:18 PM

edit :

it also boots ok with everything to default bios i then tried "load optimized default" in bios , that booted
June 30, 2009 12:04:16 AM

but still no 6th dimm working
June 30, 2009 7:36:01 AM

This is quite interesting as I'm having exactly the same problem with my set up (see thread Gigabyte EX-58 Extreme) although I'm only using 6GB. When that third DIMM slot is filled....nothing!
June 30, 2009 9:18:10 AM

hi simon

what settings are you using ?

are you overclocking
June 30, 2009 9:20:27 AM

madmike1982 said:
hi simon

what settings are you using ?

are you overclocking


I'm not overclocking, no. When it first happened I was quite worried as I had only just put the system together and thought I may have fried something inadvertedly. However, after swapping the modules around I finally found out that it was the 3rd white DIMM slot that was causing the problem.

With 4GB RAM in the system I did try and use Gigabytes 'EasyTune6' software to overclock it, but the machine then doesn't POST if I attempt to overclock.

I have reset the CMOS and set the BIOS back to default but, alas, no luck!
June 30, 2009 9:30:35 AM

It's also probably worth noting that I'm using Corsair 6GB (3x2GB) DDR3 1333MHz XMS3 Memory CL9(9-9-9-24) with an GA-EX58-Extreme. Are you using the same motherboard?

Is anyone aware of any problems with this board? Could a BIOS update resolve the issue?
June 30, 2009 10:03:04 AM

i am on bios f7



is this latest ?



yes i have the extreme board

im using (or trying to) use 12gb ocz 1600 mhz platinum 7-7-7 ram

the 6th (last dimm slot doest work so i dont know what to amend in bios
June 30, 2009 10:15:50 AM

I'm not sure if this is the latest...it's a case of the blind leading the blind at the moment I think! We need to stick around until someone more knowledgeable can help us out!

I won't be home for a few weeks to test anything but any information anyone else can provide would be excellent.
June 30, 2009 12:06:55 PM

I dont know if this limitation still apply, but I7 have kinde of screwed memory controler.
It doesnt work with tripplechanel activated and frequence over 1066 or 1333 (not sure which one) even if cpu is marked as 1600+.
If you cannot make it work with memory modules in slots 1.2.3 or 4,5,6 or 1,2,3,4,5,6 (only in this case cpu should use triple chanel mode i think).
Also try run memory on lower frequency if this make it work.

Other possibility is that your memory brand just dont like your mobo. (i hade similar issue with ADATA on asus board before, corsair worked fine).

Btw this is reason why i decided to skip I7 generation.
a c 177 V Motherboard
June 30, 2009 6:05:34 PM

I'm going to re-post this (again): when the i7s approached release, I warned, long and loud, that this is not a good place for people with little or no systems experience to be. This is a completely new chip mask, with a completely new northbridge, a completely new memory technology ('direct connect three channel'), which requires completely new boards, with completely new BIOS! There were bound to be problems, and some serious! You should expect weekly BIOS upgrades, and scads of difficulties - it's, essentially, a huge 'public beta' project... If you have little depth of experience, and no knowledge of troubleshooting (hardware especially), nor have a serious reason to invest a lot of time in an untried platform - this is a really bad choice. If you expect building a computer to be like plugging in a toaster; if you're the sort of person who didn't do well in math or science classes (or just completely avoided them); ditto!

Everyone seems to think they've 'gotta have' the latest and greatest goodies that appear on the market - but a comprehensive set of untried technologies like this requires serious: effort, understanding, and, most of all - time! Most everyone I see here with X58 based problems would most likely have been infinitely better served to have stuck with a Q9550; I liken this situation to deliberately shooting yourself in the foot - and then complaining because you've got to change the bandage twice a week!

That said, the first point regarding these boards is the i7 setups show negligible subjectively noticeable gains from the currently available memory speeds:
http://www.tomshardware.com/reviews/memory-scaling-i7,2...
so you needn't obsess about getting that last MHz that your memory is rated for... Slow 'em down to 1333, and see if they work.

There is also a great i7 tweaking article from GB tech here:
http://www.tweaktown.com/news/10827/gigabyte_shows_how_...
I have all the Intel docs re the i7/x58, and, given a week or two to digest them, should start to become useful for these problems!

Edit: also a good explanation of RAM vs 'unCORE' frequencies:
http://episteme.arstechnica.com/eve/forums/a/tpc/f/7790...
!