[syedimty]

Hi all,
I recently got an asrock extreme 4 z77 mobo , intel 3570k and gskill 4gb x 2 1600MHZ(not dual channel, separate kit but same model, brought them together)

I have update the mobo bios through internet.

There are four ram slots, and they are a1,a2,b1,b2.
In manual its said that a1,b1 - dual channel and a2 - b2 dual channel.

But the problem is when add the ram to these following slots i am getting 55 error(that is memory not install). But the ram works only when i insert them in a1 and a2 slot.

When try them in below configuration, i am getting 55 error
1. a1 , b1
2 b1, b2
3 a2,b2
4, b2,a1
5, a1,a2
6, a1,b2

I just want to know , whether my mobo is faulty. or everything is just fine.