Your fans starting then shutting down is in keeping with a Ram fault (amongst others) and the blue screens are feasibly ram especially if the Bluescreen causes blamed vary a lot.
It should be noted that your Ram is not on the
gigabyte QVL ?
In building premium systems I rarely go for ram above 1600mhz currently as the gain for faster is nominal at around 2-3% measured against the added instability.
If you want to maximise processing bandwidth I suggest PATRIOT 4GB PXD38G2133C11K as opposed to two 8GB sticks or go for Kingston who have very good quality control in place at the moment and also have a cooperative deal with gigabyte.
Re cooling I would strongly suggest a liquid cooled setup for the CPU with a four pin WPM fan to bring your idle noise level down and reduce temperatures to cope with whatever you throw at your i7.
As far as the power button reset is concerned it is not a myth and still works for many if not all motherboards as there will be latent power stored in the caps cleared only by power button on for 30 seconds.
the 30 seconds rule is the standard amount of time for any ic to reset all of its gates to 0.
the recommended reset time as advised by support and test engineers for Intel motherboards is 14 minutes due to caps and gates in advanced ic's that are designed to hold power for that time by design.
All of this is of course my own opinion based on my personal experiences and i reserve the right to be wrong :r1: