I have a problem with my config, I have the computer freeze, often

I tested the OC with HyperPI 32M, LinX, OCCT, etc... is good (@stock is the same, while AUTO in the bios)
I tested the SSD Intel X25-E with the Intel Toolbox, no problem

what I could try to find the problem?

freeze it at any time, in IE, FF, Windows, etc. ...

bios 0011 and I feel that it may come long after the shift to 970 and ram @2000 (Dominator GT 2000 C7), I had a 920 before and the same ram but @1600

thanks