Kaitlin4599, if you are having a stability problem the most obvious culprit, as ED already mentioned, is your RAM frequency running too high. Your RAM is rated for 800 mhz and the pics show that your overclock carried it to 936 mhz. Realize, first that CPU-z will show the DDR bus speed of the RAM which is half of the DDR2 actual frequency. So multiply that number by two. 468x2=936.
But I think the big idea you haven't grasped is that when you overclock using the FSB the frequency of the CPU is not the only frequency that rises. The FSB is the master frequency of your system and there are several frequencies that rise in concert with it. Namely, the CPU, the NB (aka, CPU/NB which is the memory controller) and the memory bus. If any of them get too high or get starved for voltage then instability can result.
So, to remedy the memory frequency issue you need to change the memory divider, which is essentially means starting the memory at a lower speed in bios than it is rated for. So try starting it at 266 (DDR2 533) or 333 (DDR2 666) instead of 400 (DDR2 800).
Forgive me if I am going over ground again that we have already covered but your experience with this system has been a protracted one for all of us and I forget if this has already come up.
