Weird RAM problem once computer cold boots

December 15, 2011 at 12:46:55
Specs: Windows 7 , Intel Core 2 Duo
This problem has been bugging me for some time. When I install 2 1GB DDR2 ram modules, I would run the memtest for about an hour and there would be no errors. The system would boot up to Windows 7 and work all day just fine. You shut it down completely, then try to turn it on and a few times it would work. Then maybe a couple days later, you try to turn on and nothing. The computer powers on but nothing on the screen. Once you take out 1 ram module it is fine and boots up. I tried using just 1 ram module for 1 month and it was working perfectly. I tried to add another ram module either in the dual channel mode slot or single channel mode slot and that's when problems would arise. Tried swapping power supplies, no solution. So I'm guessing the 2nd memory I added to the system could be the problem. What do you guys think?

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#1
December 15, 2011 at 13:12:15
Try reversing the two modules. Running RAM in dual channel usually requires matched modules. However, if you install the faster stick in the first slot the system may be more stable. May not actually be running in dual channel mode even when you go it to work.

The contacts may be corroded. Snap each module in and out 4 or 5 times with all power disconnected. If a laptop, you should also remove the power battery too.


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#2
December 15, 2011 at 13:48:10
The 2 ram modules were part of a 2gb upgrade kit so the speeds are the same. I do recall a similar issue with using just 1 ram module but after using an eraser on the gold contacts it worked fine. I tried that on the second module but apparently it still had the same issues. I guess I can try reseating the module 4 or 5 times to see if that helps. It will probably take me a few days to find out.

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#3
December 15, 2011 at 14:29:05
The eraser works fine on the module but doesn't do anything for the slot contacts. That is why I recommend snapping in and out a few times.

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#4
December 15, 2011 at 14:52:23
I believe it does look like a ram issue. When I tried snapping in the ram 4 or 5 times the system just would not boot. I took out the 1 ram module that was definitely working and replaced it with this second one. The system did not boot. I put the 1st ram module back in and it booted fine. The module was purchased with a lifetime warranty so I am contacting the vendor to see if I can get a replacement. Then I can try again.

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#5
December 15, 2011 at 17:49:16
Board flex issue, cold solder joint or cold connection?

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#6
February 7, 2012 at 23:03:17
This is a late reply but the problem was the ram module went bad. It had a lifetime warranty so I got a replacement and the system has been running smooth ever since, no more problems. Thanks for the suggestions everyone.

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