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Unlocking locked cores can be the cause [...]
Sounds like either a PSU problem, or that memory would like a little higher voltage.
3x2Go Corsair PC3-10600
That is Intel memory.3 sticks on AMD is not a good idea.Either use 2 or 4, but not 3.Also because it is Intel memory, it can have wrong timings for AMD.And please stop the OC stuff until the problem is solved, as OC on top is seeking problems.