Hello, first of all I can give you only the small tip, do a little more intense in the matter, read here to suggest something better failures here you'll find quite quickly that OC with software is not usually the better way. Dear all just change the BIOS and eliminate the error source software! Is there already a date bios on it on the motherboard? In particular, it can be with your CPU, which automatically with the raising of the CPU clock and the clock of the graphics unit is lifted with. These could then be the limiting factor. The memory clock can be adjusted automatically by the OC, which in turn could be the source of errors. You see it so often is not enough to simply make one click and finish times.