I attempted an overclock last night after about 30min of running Prime95 at temps right around 78*C my computer shut down and gave me the blue screen. When I attempted to re-boot it would not locate my SSD. I unplugged and re-plugged the SSD and it booted up like nothing.
When I checked the results.txt of Prime95 it gave me this:
If you run Prime95 and it goes to blue screen it usually means your overclock is not stable. Did you add any voltage to the v-core? Sometimes going up one notch on the v-core can help or if you are not comfortable with that then bring the 4.5ghz down to 4.4ghz or leave it and add one notch to the cpu voltage. As with all overcloks you do have to take the smallest steps so as to not damage anything. The process can be very tedious to get the right combiation of multiplier ,bclk and voltage to get a stable overclock. That is why people use Prime95 to not only burn in thier overclock but also to test the stability of it. Not sure about the disabling of the PLL.