Dell Precision M6300 buring up memory

I purchased a used Precision M6300 about 6 months ago for a friend.  He uses it for CAD work, email and internet.  When I originally got it in I formatted and loaded Windows XP Pro 32bit.  It has 2x2GB of RAM.  After I got everything loaded it would occasionally Blue Screen.  I ran a lot of memory tests and determined that one of the RAM sticks was bad.  When I got the new one everything work okay for a few days and I get the BSOD again.  So I determined the other memory stick was bad and replaced it.  

It worked good for about 6 months and it is getting the BSOD again.  We removed the DIMM B and it seems to be working okay again.

Could this laptop be burning out the memory?  I have never ran across something like this happening.  What are your options?

Thanks
DCS12Asked:
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MaurizioSchmidtCommented:
We have many M6300 Clients and they all work 24/7 and we dont have any Memory Problems.

You said you changed one DIMM here, one DIMM there. You should NEVER mix Ram Modules, NEVER.
Get 2x2GB high quality ( not those cheap Dell Smart ) and retry.
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DCS12Author Commented:
There were exact replacements when I changed them.  What would your option of "high quality" be?
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MaurizioSchmidtCommented:
i dont think that i like your tone.

do what ever you want, you replaced them "exactly" and you got the "exactly" same result ? what a suprise.
maybe you find somebody who thinks youe tone is appropriate.
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CallandorCommented:
I don't see anything wrong with the asker's comments - maybe some people are too sensitive.

When it comes to memory, environmental factors play a role: heat is the enemy of electronics, and if you use a laptop for any lengthy period, it will get hot.  Laptops are also prone to collecting dust in the vents, which only makes cooling more difficult.  If he's going to stick with the laptop for extensive use, get a laptop cooler and make sure the vents are cleaned out regularly.  I don't agree with the comment that you should never mix RAM - there are situations where they will work fine together.
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MaurizioSchmidtCommented:
Sorry but there is no situation where mixed Ram works better then non-mixed.
Those Laptops M6300s are working horses, they dont have any cooling problems, so there
is absolutly no extra cooling necessary.

Dell sells at least 2 different types of Memory Modules. the cheap ones ( Dell Value Ram..) and the normal branded ones. we dont use any Dell modules, we use the Original Modules, cause Dell doesnt produce any RAM Modules they just relable them with new article numbers.

Get the specs (DIMM, Speed etc ) and buy quality rams like OCZ, G.Skill, A-Data, Apacer, Team etc. Dont use this Kingston Value Modules.

We manage 390 Dell Workstations and  ~250 Notebooks and with this "approach" we have NO problems.
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CallandorCommented:
>Sorry but there is no situation where mixed Ram works better then non-mixed.

I don't think anyone was making that assertion; the question is whether it would make a difference as to cause failures as described in the question.  If the RAM was the same as the original equipment, there shouldn't be a difference.

Even if the M6300 is a workhorse, it is still subject to environmental factors, and we have no idea how this laptop is being treated.  Heat, electrical power, and physical shocks can all degrade a component's life.  The fact that the memory works initially says to me that it probably isn't a quality issue - six months of use is beyond most initial warranty periods.  If one is really worried about it, you can buy Crucial, and they will warranty it for life.
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DCS12Author Commented:
Sorry Maurizio I didn't know your could actually here me.  Now I'm and being sarcastic.    

But seriously I just want some options because I don't want to spend $60+ on new RAM and get the same results.  I have upgraded and changed memory in 100s of computer over the years and have never seen a problem similar to this.  From my experience if there is a problem with mix RAM it usually shows up right away.

The laptop is sitting on a cooling station.  This was my initial thought that maybe it was overheating.  It is sitting in an office in a machine shop to the environment is fairly clean.  

I am thinking of maybe swapping memory from from my Latitude which is the same speed and putting his in mine and see who gets the BSOD.  

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CallandorCommented:
Another thing to check is if the voltage is set to the spec of the RAM - sometimes, the machine doesn't pick up the SPD setting in the modules.  If everything checks out and the problems continue to happen, I would chalk it up to a bad machine - ie, the motherboard.
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