Please help, bootloop using 2 out of 4 ram slots after new case install

[Ramboner]

Hi guys,
I had 4 sticks of 4gb ram in my old case running fine with 1.57 dram voltage.
I swapped into new case and it bootlooped until I removed 2 of the 4 sticks of ram. So with 2 sticks in the 2 left most dimm slots it works fine, with any sticks in the right hand 2 slots in any combination it boot loops even with just 1 stick in any of the right hand side dimm slots it boot loops. I've re seated the cpu, blown the dimm slots out with compressed air and ran a tooth brush with cleaning alcohol over them with no success. I've upped and lowered the dram voltage and updated the bios firmware and pulled the mb batteries to reset bios all to no effect.
Please help? Did I screw my mb up when I moved it from case to case somehow?

 

[Ramboner]

Bump

 

[DavidS14]

I would pull the board and try running it outside the case just to check that you are not grounding out/flexing the board with the new install. I've missed a stand off before that was in the wrong place that caused issues in a new case.