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Module Enabled but no DIMM seen

Last response: in Motherboards
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June 24, 2012 4:05:18 PM

Hi
I have a Gigabyte GA-X58-UD3R. When I try to add more memory I get the following problem. The slot 4 does not indicate a DIMM but enables it. This is reproduceble for many differnt combinations of the DIMM moduels and also for different configurations.
Any suggestions please

More about : module enabled dimm

a b } Memory
a b V Motherboard
June 24, 2012 7:44:43 PM

How much RAM is already in it before you add the 4th stick and how big is the 4th stick?
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June 24, 2012 8:04:15 PM

well all modules are 4 GB. they are matched 3 by 3. I can make the sytem find (beside the starting 12 GB) 16 and 20 GB but as soon as I have slot 4 occupied it (the bios) claim not to see the DIMM but it enables it. The bios displays something like this


. . . . . . . . . . . . . . . . . . .1 . . . . . 2 . . . . .3 . . . . . .4. . . . . .5 . . . .6
DIMM slot (MB) . . . . . 4096 . . . . - . . . 4096 . . . . - . . . 4096 . . -
Enabled slot (MB) . . . 4096 . . . . - . . . . . - . . . . 4096 . . . .- . . . . -


The piece that it does not enable slot 3 is normal as this configuration disables this slot. The behaivier that it does not see that there is a DIMM in channel 4 but still enables it is consistent for 4,5 and 6 DIMMs
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Related resources
a b } Memory
a b V Motherboard
June 25, 2012 12:35:25 PM

Do I understand it right that if you put in all 6 sticks you get

4096...4096...4096..............4096....4096
................................4096........................

?
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a c 84 } Memory
a c 462 V Motherboard
June 25, 2012 1:12:22 PM

check that the ram is all the same and that it been tested or qal for that mb. you may have to bump the dimm voltage up a bit.
if it wont see it you may have a bad dimm slot or a bad dimm.
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June 25, 2012 1:26:14 PM

I have exchanged the DIMMs and tested with at least four different ones (systematicly). I have increased the voltage.
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June 25, 2012 1:27:17 PM

Raiddinn said:
Do I understand it right that if you put in all 6 sticks you get

4096...4096...4096..............4096....4096
................................4096........................

?

yes
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a b } Memory
a b V Motherboard
June 25, 2012 5:37:58 PM

No matter what order, any of those other 5 sticks in that same slot does the same thing?
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June 25, 2012 5:53:25 PM

well I keep the matched tripples in 1,3,5 or 2,4,6 they are the same but with different version numbers. Same model number and timing. I have only systematicly tyed 2 from each set in slot 4 but before I started out by systematic test I may have had others in that slot.
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a b } Memory
a b V Motherboard
June 25, 2012 6:17:48 PM

If you just have 1 in slot 4 and no others in any slot, what happens?

Also, when you have 1 in slot 1 and 1 in slot 4, when you go into Windows right click on My Computer and hit Properties and tell me how much RAM it has listed there.
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June 25, 2012 8:01:09 PM

do not work at all. I have assumed I have to start with the odd slots though.
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June 25, 2012 8:06:28 PM

further I do not normaly run Windows. But the problem with the suggestion is that the boot process do not pass the "calylating RAM size" stage. this means I can start no OS with a memory stick in slot 4
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a b } Memory
a b V Motherboard
June 25, 2012 8:42:32 PM

Sounds like its just a bad slot to me. The results of the tests didn't do anything to change my theory.
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!