Hey guys, i recently began OC tryouts with my current rig. ASUS M5A97, AMD PHENOM II x4 970 BE, and an Aerocool VS-550W PSU along with 1333 MHZ 8 GB Kingston HyperX RAM and Akasa x4 cooler. Now i have some knowledge about how to do basic overclocking. I simply raised the FSB from AI Tweaker section of my BIOS. The stock was 200 at 3.5 GHz and i raised it to 229 to have 4.0 GHz. I made some tests with prime95 it failed. I searched some about the error and all the answers said that voltage wasn't enough. I guess i increased the voltage but i don't know how much i did. However it is stable at this point. But i don't know if anything is right. ^^ I need some serious help and guideness to what to do how to reach 4.2 GHz. I tried to do it with again FSB, it gave blue screen after the first minute of prime95 blend test. So again i tried to increase to voltage again, i tried 3 values like 1.39, 1.40 and 1.44 but i still don't know exactly how to increase these values. Can somebody tell me what to i do on AI Tweaker section? I need an OC for Dummies kinda thing. And these are my current values after 2 hours of prime95 with everything OK: Btw don't mind the temperatures it was when the blend test was working. At ıdle and medium load it is 38-55.