Cant get past POST after OC attempts. Help!!!!

I have tried different combinations of settings in the BIOS to get my CPU to OC but nothing has worked this far. I took a screen shot of my mobo settings, hopefully someone can point me in the right direction. Im not sure if what I am doing is wrong or my computer just wont take the OC. My goal is to get my CPU running stable at 3.6 Ghz. Much appreciated!

AMD Phenom II x2 555 BE (Unlocked)
Zalman CNPS 10xQuiet
Asus M4N98TD Evo
Asus Optical Drive
4GB(2x2gb) G.Skill DDR3 1600Mhz
WD 640 GB Black HDD
CM 590 (4 fans-2x2 push/pull with Scythe Fan Controller)
Win7 64-bit
Graphics (not worth mentioning, waiting for 460 to drop in price)
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  1. Best answer

    You have a lot of problems there.

    1- The CPU Bus Frequency must be 200MHz not 400MHz
    2- Your CPU ratio must be x18 for get the 3.6GHz, not x8.5
    3- When you change the CPU Bus Frequency, you change the NB frequency, HT frequency and RAM frequency, so, that's the reason to use the CPU multiplier in a BE CPU like yours.
    4- 3600MHz on NB with stock voltage will NEVER work, even in Thuban core is pretty difficult to get, so, change it to "Auto" while you get the 3.6GHz on CPU, after that you can play with the NB frequency.

    Let me know the results.
  2. Best answer selected by saintsfan81.
  3. Yeah, I was way off.

    Hey thanks saint, I was finally able to get a successfull OC with your advice. I am doing the imcremental adjustments now before I get to 3.6, and running Prime95 for stability, but I should be good to go from here.
  4. Nice, run prime95 for 2 hours or more to check stability and don't forget the temps, 55ºC or above isn't good.
  5. Well it looks like I fell short of my 3.6 goal. I got a BSOD 20 mins in to the stress test at 3.5, and my computer crashes at the desktop screen when I try 3.6. OCing to 3.4 has been running stable for about 1 1/2 hours using Prime95, temps staying at 45C at full load. Overall not a bad CPU for $99 (quad core at 3.4 Ghz), wish I could have got a little more out of the CPU though. Hey thanks again for your help, at least I know what my boundaries are, and learned how to do an OC.
  6. Disable the two unlocked cores and test it again at 3.6GHz
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