Gaming 5 ram slots not working

Hi
I gave just upgraded my mobo and cpu to z97 gaming 5 and i5 4690k. The issue I have is when I use ram slots 3 or 4 the system with not boot and the error code 03 will be displayed. Slot 1 and 2 are working its just when I try and use slots 3 and 4.
As per instruction I should be using slots 2 and 4 but cant.
Any Ideas. Current ram is a data 2 x 2gb

Hi I have tried both individually in each slot, as soon as I use 3 or 4 PC doesn't post. The debug error 03 is displayed on the mobo. No I don't have other ram to try. As I say it works I. 1 and 2 .

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<Edited by Moderator>

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