Need Help On How to Make This Proccessor Stable PLZZZZ!!!

Ok so I overclocked my intel e4500 from 2.20 to 2.81GH stable at about 41c which is pretty good ive been told. I've tried to overclock it to 3.0 GH but it will not go stable for nothing i run prime 95 and about 5 min later prime95 encounters error but with 2.81 gh it runs pretty fine. So if anybody on here that knows some things about cpu's and overclocking can inform me on how i can make my cpu stable at 3.0 GH would be a great help i really just want to get to 3.0GH and be happy  .