Hellow!

Today my rock solid overcloack at 3.8GHz turned out not so solid any more... infact i didnt even get in windows. Afer some (long) time i "spoted" the problem.
My CPU isnt stable anymore with 22x multi. any ideas why would that happen? Maybe is MOBOs foult? (same settings now at 21x multi 3.8GHz is solid once again... i wonder for how long )