Overclocking on the stock cooler thus causing overheating may be one of the issues for the reason why you got the blue screen. Other issues may relate to insufficient voltage
I would hold off overclocking until you get a new cooler.
However, as ShizTech has stated, your temperatures are in the norm. They're a little on the warm side, but that's expected of a stock CPU cooler. You could always try reapplying the thermal paste if you feel it could get better.