Assuming the memory and other components are not faulty, it is not surprising the system had issues.
Mixing memory from different kits and even mixing individual modules often cause problems because of variations in module characteristics.
There are several things to try -
1) Get a system compatible 4 x 16 GB quad/dual channel kit of memory instead. The modules have been tested to be compatible and are guaranteed to work together. Existing modules could be kept as back up or sell them.
2) Try the modules in different memory slots. First two modules in slots 1 and 3, and second two modules in slots 2 and 4. Or first two modules in slots 2 and 4, and the second two modules in slots 1 and 3.
3) Initially reduce memory frequency in...