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Computer wont start with 4 ram modules

Forum Motherboards & Memory : Memory - Computer wont start with 4 ram modules

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Hi TomsHardware

I got this problem, and cant get a decent answer any place, so hope you guys can help me out.

My computer keeps turning on and off when i install 4 modules of RAM.
But it start fine with 1, 2, and 3 modules.
I have tested if it were the ports, but all 4 seems to work fine with 1 module in it.

This is my system :
Gigabyte Ga-965P-DQ6
Core2Duo E8400
Corsair 550W PSU
4 x 1 GB Corsair Dominator PC8500, 1066MHz, 5-5-5-15. 2 x version 1,6 and 2 x version 4,1

I have tried to give the RAM +0,3volt (standard is 1,8v and the RAM says 2,1)

Somebody please help me

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Your motherboard comes in 3 versions, might be useful to say which one you have.

In BIOS, choose Optimized Defaults, this will clear any OC and other options you've choosed. Reboot and return to BIOS, set anything you normally use except for OC items.

It supports up to 800MHz RAM - are you using BIOS settings to force it to 1066 or is it coming up as 800?

Is dual-channel mode showing enabled?

Try increasing the DDR voltage to 2.2V. If this works, reduce it by 0.025 until you find min V it works with.

Did you used to have 2 of these same modules or did you remove the existing ones to install all 4?

Reply to mongox

You try with all RAM modules, one per one in all ports? maybe one of this is defective.

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Reply to SAINT19

Hi
Got rev 1.0 And i already got 2 modules and then i bought 2 more Gonna test the #2 wrote in 2 min

Reply to Krueger

#2
Right now im running with 3 Modules, and it says Flex Mode enabled.
In my BIOS, its says: Memory Frequency(MHz) 800 667
I tried to give it +0,4v no succes, then 0,45v still no succes.
Should i try giving the MCH more volt ?

Reply to Krueger

return the memory and buy 2x2GB chips.. problem solved.

Message quoted 1 times

Reply to rand_79

rand_79 wrote :

return the memory and buy 2x2GB chips.. problem solved.

true But now i got 4 x1 GB and want them to run

Reply to Krueger

I have a lottery ticket I want to win.. doesnt make it happen.

try running them at 800mhz with 5-5-5-16 and see if it boots.

those memory arent certified to run at that speed with 4 of them.
(just humor me and try it as a troubleshooting step)

Message edited by rand_79 on 09-28-2009 at 04:52:39 PM

Reply to rand_79

If those are the TWIN2X2048-8500C5D then the rated voltage is 2.1V - I wouldn't go over 2.2V

Look carefully at the modules and see if the new and old match exactly.

Will any 4th module cause the errors?

What version of Windows? There are some settings that can affect what amt of memory shows, but shouldn't cause errors if it's present.

Does all the mem show, 4096, on POST? How about in Windows?

Reply to mongox

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