Some annoying RAM 'Issues'?

[eQuilibrium]

Hey guys.

 

So I've recently upgraded to skylake and i'm having some very annoying RAM 'issues'

 

Upon assuming I had faulty RAM (Failed memtest) I had my kit warrantied and a new one sent out to me, tested again, same issues, failing memtest.

 

Now, I had this tested at my place of work on our X99 bench, and it passed with flying colours, now I start to worry, naturally.

 

Been testing single stick in each DIMM today on my motherboard and have not had one fail/error in memtest (will be testing 4th slot in around 15 minutes)

 

Although, I tried running dual channel (only 2 sticks, have a quad channel kit) and I was getting errors (both combinations of dual), although running in single thus far (single stick), I've had not a single error/issue.

 

What could be causing this? Could it be a memory controller? something a little more serious perhaps?

 

Really scratching my head, i'm not a trained/qualified technician so I am resorting to your professionalism and friendliness within this forum.

 

Build is in my signature, some parts were used from my previous build.

 

Thanks in advance and would love to hear your suggestions as to what could be wrong, as I'm fresh out of ideas.

 

Whole system will be taken into my workplace on Monday regardless, but if I'm doing something wrong and it fixes it, then that won't be needed.

 

EDIT: Will be back very shortly, so my replies will be delayed