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can't fit RAM sticks into DIMM slots on mobo

R

rookie1010

Senior member
Helo

I have got a gigabyte 81875 ultra which originally had one stick of crucial 512 MB RAM.

I bought two sticks of kingston 512 MB RAM and tried to place them in any of the remaining (6-1) free slots. i could nto get all three sticks in at the same time.

i managed to fit two sticks of RAM in the 1st and 4th slot (orange slots). for some reason i can not fit any RAM in the purple slots.
RAMs wont go into slots 2,3, 5 & 6 completely(purple slots). can you guys help me out

i think the memory modules for some reason just wont go in. at soem point it went in a bit, and for 3 sticks of 512 MB RAM in(one not in properly), it read 768 MB, the next time i had the improper stick of RAM in, it woud not go into the memory test(bootup)

6 184-pin DDR DIMM sockets
Supports Dual Channel DDR400/DDR333/DDR266 DIMM
Supports 128MB/256MB/512MB/1GB unbuffered DRAM
Supports only 2.5V DDR DIMM
Supports only 2.5V DDR DIMM
Supports 64bit ECC type DRAM integrity mode
 
thanks fore the reply
no, none of the slots of RAM are DDR-II.

i am lining it up with the slot but it wont go in

i have managed to fit the 2 new sticks of RAM in the "orange slots"

but can't fit the older stick of RAM in the "purple slot", (the older stick of RAM previously was in one of orange slot(DDR slot # 1)


 
Hi, Compare the notches in the mem that will go in and the mem that wont. I have a couple that I can't identify. They have notches about 1/64" different from the good stuff. At a glance they look to be the same, but are not. Jim
 
thanks for the reply
this 1/64" issue is with the memories or the motherboard?

the new memories and the old memories both manage to go into slots 1 and 4 of the RAM banks(orange slots but they wont go into slots 2,3,5 & 6(purple slots). you think this is a prolem with the motherboard.
 
Be careful forcing them. I had an extra-thick memory module, perhaps with no chamfer on its edges, that damaged a motherboard memory slot. It was tight, I went ahead and forced it, and it bent several of the connection pins.

It is unbelieveably tough to straighten those pins and get them back into their recesses in the memory slot. You need lots of light, a magnifying glass, and the tiniest tweezers or screwdriver blade that you can find.

Even after "fixing" the connectors, if I removed and re-inserted a memory module, it would sometimes give memory errors.

Hence, be careful...
Check the leading edges of the memory module. If they are sharp, use a file to put a small chamfer on the PCB.
 
I just looked at the pic on Gigabyte's site an all six slots have the same notch pattern. If a module fits in one socket, it should fit in any of the others. Make sure you have the slot in the contact edge of the RAM modules lined up with the index key in the sockets. Make sure you haven't broken one or more of the keys such that they are obstructing insertion. Also make sure the white eject levers at each end of the sockets are open before trying to insert modules. And check your manual to be sure what the best insertion pattern is for your number of modules.
. For grins, compare the contact edges of the modules and make sure that all have the same number of contacts and slots and that the slot is in the same location on all. There should only be one slot in normal DDR modules.

.bh.
 
thanks for the replies

the new memory modules(kingston) i just ought are fitted in the mobo in slots 1 & 4

it is the memory moduel i had previously (crcucial) which i cant fit in slots (2,3,5 or 6), i had tried to fit any one of the modules in slots (2,3,5,6) but nonw wants to fit nicely.

i have ensured that the contact edges are lined up i have tried slot #5. ensured the keys are not broken either and also ensured that teh white leveres are all open.

by insertion pattern you mean fitting in memory into slot #1 then 2 then 3, correct?

dont know if this would make a difference.

but when i was mating the case(antec sonata) to the mobo(gigabyte 81875 ultra), i had difficulty sticking the power connector of the power suply into the mobo(i had to use a screw driver and push the power connector in pin by pin after placing the power connector in slant wise).

i had not touched the case for about 6 months, and it used to sit 1/2 a meter from a radiator. you think that could have had an effect on the
dimcensions of the slots?

i did check ut the chamfer on the crucial memory, it seems to be ok, do you guys think i should file a bit more?
 
i have encountered either ram that was fat or dimm slots that were slim to the point i have to take the m/b out of the case because it was flexing too much. as long as the points are lined up it should work, there would happen to be a wire laying across the slots? sometimes there are single wires of the psu, like a fan readout wire that my fall across some of the slots.

other than that, just be careful.

ori, maybe you got some slots that are within spec, but on the tight side, and you have some ram that is within spec but on the fat side.
 
maybe you got some slots that are within spec, but on the tight side, and you have some ram that is within spec but on the fat side.
Click to expand...

what happens in such a situation, can you file the RAM a bit?

do you think the radiator had an effect of some sort?
 
take the motherboard out of the case and then insert the ram, your case is probably flexing the board enough to make it difficult to get the ram in, i had this happen more than once and now i always install the ram and cpu,hsf before putting it in the case
 
I have some fine files and the idea of de-burring with a slight tapper of the edge sounds
good to me. Just be sure the ram/card is uber-clean before installation.

Zepper reccomeded that I use ProGold and I am happy I took his advice. It's a conductivity
enhancer and lubricant. View it here http://www.caig.com/ . It can be bought at Radio Shack.
The battery life of all the AA batteries I have used it on has been extended, cell phone too. :thumbsup:

In my silly little world, a connection that is not soldered, is not made-up dry.


...Galvanized
 
Might be worthwhile to take a magnifying glass to your memory slots to make sure all the contacts are in place in their little notches. I've managed to bend those out into the way of the modules on rare occasions. 😱

You can get a Pro-Gold contact treatment pen from Radio Shack that will enhance the contacts and lubricate them as well - that can help the modules slide in easily. I use the stuff all the time on my add-on card contacts, memory, cables, flash cards, you name it. Great stuff! But you have to make sure your physical mountings are stress-free as easy in also makes for easy out... 😉

Taking the mobo out of the case as suggested above can also make for easier insertion. Mobos are getting thinner all the time and very flexible. Makes life more fun for us... I set my mobos on that sheet of anti-static foam that usually comes in the mobo box to insert the CPU, memory and install the HSF. I then set the mobo into the case on the standoffs and put the screws in very loosely. Then I install an add-on card into the slots on both ends of the row of slots ( usually a video card and PCI card) and screw them to the card screws. Then I tighten the mobo screws, but not too tight as the board can be damaged. That method usually results in a stress-free mobo.

You can buy larger quantities of Pro Gold from McMaster-Carr (mcmaster.com) - PM me if interested and I'll send you a cross ref of Caig part numbers to Mcmaster part numbers as for some reason Mcmaster is loathe to provide the true names of most of the products they sell in their online catalog. If you didn't have many of the characteristics of Caig products memorized, you'd have no idea that that's what they are selling.

.bh.
 
Make sure you're lining up the notches on the RAM with the notches on the DIMM slots on the motherboard. RAM can only be inserted one way correctly.
 
Originally posted by: allanon1965
take the motherboard out of the case and then insert the ram, your case is probably flexing the board enough to make it difficult to get the ram in, i had this happen more than once and now i always install the ram and cpu,hsf before putting it in the case
Click to expand...

this is what i do, i personally wouldn't take a file to it
 
Might be the end clips (that snap down when you place the ram in). Try helping those out...first clip/unclip/clip/unclip a bunch of times to loosen them up. Then push the ram with one hand while adding upward pressure with your other hand on the clips.

Otherwise, great advice from Zep and Galvanized.

-z
 


zepper, when you refer to contacts, you mean contacts on the memory modules, how does one bend those, are they not "in a way etched" onto the ram memory module
i tried looking for that lubricant. we dont have radioshack here in england, i tried locating it on kelkoo and dabs, could not come up with anything. do you know any product that might be available in the UK?

i had dificulty inseting the power module socket into the atx power socket of the mobo. so i dont feel like removing the mobo, i was hoping to do it without remooving the mobo from the case

there is one notch on the ram stick, correct? when i push in the ram into the socket, i ensure that both the clips clip shut at the same time, correct?
 
Often audiophile shops carry Caig Labs Pro Gold as well as non-computer specific electronic parts shops. You can go to http://www.caig.com to see if there is a distributor or other contact person in England.

I went to caig to see what I could find and I came up with this: Probus Electronics Ltd United Kingdom Pinner Middlesex 011 44 20 8866 7272
Send E-mail: warren@probus.freeserve.co.uk

.bh.
 
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