Can I suggest leaving the CPU voltage on AUTO as 1.45V is an enormous amount of extra voltage on a 6300. You really don't need that unless you're water cooling in the 3.6GHz+ regions. Honest.
And until you've settled the CPU down, don't even think about taking the memory off AUTO.
Try this;
Reboot the PC, press the DEL key to get into the BIOS.
Once in the BIOS, arrow over to 'LOAD OPTIMIZED DEFAULTS' and select that. It will ask if you are sure, confirm that you are the PC will reboot.
Use the DEL key to get back into the BIOS again.
Go to ADVANCED BIOS FEATURES and select that.
Set the following to Disable;
CPU Hyperthreading
CPU Enhanced Halt (C1E)
CPU EIST Function
Virtualization Technology
Press ESC to come out of that menu.
Go to the Motherboard Intelligent Tweaker (MIT) and select that.
Set CPU Host Clock Control to Enabled
You will now be able to change the CPU Host Frequency.
As you were already at 2.4GHz Set it to 333 to start with.
Now set the PCI Express Frequency to 100
Now select System Memory Multiplier
Set that to 2.00. Your memory will now happily overclock with the CPU up to FSB of 400, which is 2.8GHz. After that the memory will also be overclocked.
Depending on your Memory, you may need to adjust the DIMM overvoltage control by between 0.1 and 0.3V to give between 1.9V and 2.1V.
Leave all the memory options on AUTO for the moment. It's not optimal, but it's not going to slow you down much either.
Press F10 to save and restart. If that's nice and stable - use SuperPi 1M places as a quick test, then go up 5MHz.
That should be stable. The most common mistake I see is people over-clocking the RAM by increasing the System Memory Multiplier when they should be decreasing it.
Give that a go up to 400MHz FSB in 5 MHz steps and let us know how you get on.
If it goes too hard, the system will auto-reset and let back in at the last settings that worked, so don't worry.
PLEASE DON'T INCREASE THE VCORE VOLTAGE AT THIS POINT - IT'S NOT NECESSARY and it's the only way to damage you processor.