BSOD after overclock

[filipSVK]

Hi guys, I OC´ed my 2500k today to 4.5ghz with asus p8p67 mobo,cpu voltage is set to 1.35V.
After OC I ran a Prime95 to test the stability,it was running for about 3hours,then I got the BSOD.
Here are the data from BluescreenView:

What do you think,what is causing the BSOD?
Thanks for help!

 

[4Ryan6]

Unstable Overclock.

http://www.tomshardware.com/forum/id-2012433/sandy-bridge-series-multiplier-overclocking.html

http://www.tomshardware.com/forum/id-2345618/reaching-cpu-overclocking-stability.html