Help, memory not recognised

[piego59]

Hello,
i have 12 gb install (3x4gb patriot sector 7)
the mobo is x58 extreme

only 4gb are recognised
the only stick recognised is in b1 slot (white)
the other 2 aren' working

i have tested all the sticks in the working slot : they all work

if i plug one stick, in bios it is written single channel mode (4gb)
if i plug 2 sticks, bios says dual channel mode but still 4gb
if i put 3 sticks bios says triple channel mode but still 4gb

i don't know why, it used to work before please help me

 

[ahnilated]

Have you change anything in the bios or had any issues with the bios or blue screens ?

 

[piego59]

well, i have changed the cpu and cooler

it did have some issues (did not boot at first but after a few tries it worked)

what i don't understand is that it seemed to see that the sticks are plugged in cos it changes channel mode from single, dual to triple but not the memory itself

do u have any idea?

 

[piego59]

i also notice that cpuz recognise 12g
windows doesn't
bios neither

 

[ahnilated]

This sounds like a motherboard problem. Have you tried uninstalling and reinstalling the memory? Have you tried running memtest86 on it with 1 stick for say 30mn and then go from there? We need to rule out that your memory got damaged or that you have a bad slot.