Hi bud, it sound to me like a ram issue, maybe set too high for your type of ram have a read of the guide below worked like a dream for me your 4300 should easily get to 3ghz, if u have no luck with the settings below post back with some more detailed system specs and ill have a look good luck
Tip: To unlock Memory timings page, press CTRL and F1 on main BIOS screen.
1. Turn off all unnecessary items in Integrated Peripherals, such as serial/parallel ports, powersaving features, fan/thermal control and anything else you don't need. Disabling 'Legacy USB Support' can aid overclocking.
2. Increase voltage: Although Conroe will overclock on stock volts, you may as well increase the voltages a touch anyway, as it will be needed later.
- Increase the VCore (cpu voltage) to 1.45v.
- Find out your rated RAM voltage ranges. Standard DDR2 will need 1.80-2.0v and performance memory will need 2.1-2.3v. The max on the DS3 is +0.6v increase which takes you to 2.4v overall. I would suggest +0.3 for standard ram and +0.5-0.6 for performance memory.
- Increase the chipset voltage up a notch (+0.1v).
3. Set PCI-Express freqency to 100 (default Auto).
4. Set DRAM Timings to your rated speed. E.G 5-5-5-15. The DS3 doesn't always set these right in Auto mode so worth putting them in manually.
5. Enable CPU Host Clock Control and increase the FSB (default 266). Depending on your chip and ram, you will need to keep an eye on the System Memory Multiplier. Make sure your ram is still running the correct speed after increasing FSB. In the screenshot below you can see I've set mine to 2.0 which means my ram is running just under it's default speed (800).
I would recommend 300FSB as a starting point. For a E6600 2.4GHz this will be 2.7GHz, which it should easily cope with.
6. Boot into Windows. Open Speedfan and two copies of SP2004. Select the Stress CPU test and click Start. This will put 100% load onto both cores. Keep an eye on speedfan as it will tell you the temps. If SP2004 detects an error it will halt and tell you.
7. After a few hours of running SP2004, go back into the BIOS and increase FSB. If SP2004 has errors, try increasing the VCore voltage +0.25v. Also worth installing the 3DMark packages and running them to get an idea of performance increases after overclocking.
My 3DMark01 at stock was 40,506 and was 50,281 at 3.4GHz - not a bad increase!!
8. To make sure your overclock is 100% stable, leave SP2004 running for at least 12 hours. Also worth running OCCT as well. Once you have a stable overclocked system, install your applications, games, etc.
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