pc wont boot with dual channel ram

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skpatel71

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Oct 11, 2013
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i just rebuilt my pc and my pc is not booting in dual channel configuration.
my pc is not booting when-
1.rams on slot 1 and 3 or 2 and 4 (dram and cpu debug led blinks in a jumping pattern 1st cou them dram again cpu then dram this goes forever)
and my pc is booting with -
1. single ram working in every slot , rams working in slot 1 and 2 , 3 and 4 , 1 and 4 , 2 and 3.

here is my pc specs
cpu - 7700k
ram - gskill trident z 3200
vga - intel hd
motherboard - msi z270 gaming pro carbon
 
Solution
blockhead78
in that case I'd check if there's a newer bios available for your mobo

if that doesn't improve things, it sounds like you might have a bent pin on the mobo socket.

even if just one pin is slightly bent it can effect memory working properly.

So if the bios update doesn't work, or it's already up to date, then it would be best to remove the CPU and closely check the socket pins (magnifying glass if needed).
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skpatel71

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Oct 11, 2013
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first boot after rebuilt - pc stuck on loop of booting for 1 sec then turning off itself then starting again itself ( all four ram , cpu vga and boot debug led was blinking one after another during the loop ).
then i tried it with 1 ram and it booted successfully but then i tried again with 2 rams in dual channel mode it stuck on black screen cant reach bios and then i tried with 2 rams in slots next to each other and its working
 
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skpatel71

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Oct 11, 2013
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when it boot i went to bios and applied factory default setting then tried again with dual channel still same result.
 
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skpatel71

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Oct 11, 2013
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yes everything they both are running at their manufacturer recommended timings/voltage and each stick pass through a mem test on its own
 
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blockhead78

blockhead78

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Apr 7, 2011
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in that case I'd check if there's a newer bios available for your mobo

if that doesn't improve things, it sounds like you might have a bent pin on the mobo socket.

even if just one pin is slightly bent it can effect memory working properly.

So if the bios update doesn't work, or it's already up to date, then it would be best to remove the CPU and closely check the socket pins (magnifying glass if needed).
 
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Solution
marcosdipaolo

marcosdipaolo

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Jan 13, 2011
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I have a pin I accidentally bended. I went for it and everything works but RAM slots 3 and 4 are not working.
Is it worth the risk trying to bend the pin/s back just to achieve dual channel?
 
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marcosdipaolo

marcosdipaolo

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Jan 13, 2011
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I don't need all of 4 slots right now, but probably in the future but i'll deal with the later.

What do you mean i could achieve dual channel in slots 1 &2?

When i mean only 1 & 2 are working i mean first and second starting counting form the processor to the side (not the MB manufacturer denomination which is alternate, DDR4_1, DDR4_3, DDR4_2, DDR4_4).
 
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marcosdipaolo

marcosdipaolo

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Jan 13, 2011
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Made it!!!!!!!!!!!!!!

bended the pins back and all four slots are working!!!

got dual channel!!!!


where is the button where i can give you 3 bazillions points for your trust!!!!!

 
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