Motherboard asus rampage 3 extreme will not recognize my ram memory

[decubamd]

Dear Sirs;
I really needs help with my PC;
it does not recognized all the RAM memory that i have installed;
and CPU-Z does;
where or who does know a solution for this ??

my system:
CPU: i7 core 920 3.3 mHz;operating system : windows 7 ultimatex64 bits
motherboard: ASUS rampage III
videocard : 480v GTX Nvidia
RAM ;corsair 1600 3x2 gb;total 6 gb on the red slots
HDD: WD 2 TB
PSU: 1000 watt

MY PC would only recognized 2 GB of RAM; but CPU-z software recognized all 6 GB;
Wh o has the answer or solution for this ??
I will greatly appreciate any sugestions or help;
thanks;
decubamd

 

[atique]

hey i have the same problem i filled all slot with ram and CPUZ says i have 18gb ram where windows says i only have 6. i have the Rampage Gene 2. if you get an answer please let me know as well. i am gonna try to get some help from the asus and see if i get somewhere i will keep you posted.

 

[decubamd]

hey i have the same problem i filled all slot with ram and CPUZ says i have 18gb ram where windows says i only have 6. i have the Rampage Gene 2. if you get an answer please let me know as well. i am gonna try to get some help from the asus and see if i get somewhere i will keep you posted.

Dear Atique;
did you get any answer yet ?;
With my problem, i ultimately figger out that one of my RAM sticks was not functioning., and that was all the reason for the faulty diagnostic program of windows and CPU-Z;
So , may be you should check the RAM sticks, one for one , in order to find out which one does not function well;
Hope this will help you;
decubamd