I really need help with this one.
I decided to overclock recently, but am running into some problems.
I currently have a C2D E8400 with Stock Cooling
ASRock P45XE - http://www.newegg.com/Product/Product.aspx?Item=N82E168...
G.Skill 4GB DDR2 1066
I can safely overclock my CPU to 3.2Ghz, and my DRAM Frequency is at 593Mhz which I think is DDR2 1183 or something.
It sounds to me that you aren't changing your memory divider. So when your ram trys to run at faster speeds, it doesn't work.
for example, if you set your FSB to 400 and your cpu multiplier is set to 9, you will run at 3.6 ghz. But if your memory is set to run at 2:3, then you will be running your ram at 600mhz, since its DDR2 (Double Data Rate) it will run at 1200mhz. Or atleast try, and fail miserably. By setting your divider to the correct setting, for example 3:4, it will make your memory run at 533 mhz, meaning 1066 for DDR2.
Anytime I am OC'ing my chip and trying to find the sweet spot, I try to take other factors out of the equation. I would set your FSB to 400, set your ram to 1:1 so it runs at DDR2 800 speeds, then max your multiplier. If 9 is the max, it will run at 3.6, if 10 is the max, it will run at 4 gigahertz. I don't remember off the top of my head what the max setting is on the 8400's.
Well, as stated by serpent1202 you really need to set your FSB strap.
Also, take most of your settings off AUTO. Leaving them on auto and overclocking can only do bad things, like overvolting. The screen shots you show are a little help to you, but can also be VERY BAD for you because it doesn't really tell you what you need to know about overclocking. You should learn what all the different settings in your BIOS do, so you can determine what needs to be changed and when.
We could go back and fourth with different bios settings but that wouldn't teach you anything about overclocking. I would suggest reading the guide below then start with all your bios settings at their lowest stable setting and working up, watching your temps and test after changing settings.
Don't give up. I got the e8400 running at 2000 FSB ( 8 X 500, 1.36 volts) on my Asus P5Q SE PLUS, G Skill DDR 2 1066 running at 500 mhz on a 1:1 FSB DRAM ratio, on Intel stock air cooling. However, I have both case side panels out and I have the computer next to a slightly open door with 40 degress F air blowing into it. It's stable enough to run Aquamark (233,000 score on EVGA 8800 GTS) but but cores fail Prime 95. I agree with the earlier post that your ram should run within it specs.