Ok your base FSB should be 200, you have raised it to 240 which has most likely overclocked your DDR2 667 Ram too. But your first problem is fixing the PCIe as it is what is causing your HDD to not be seen.
Next lower your overclock back to Multiplier of 9 and FSB of 200.
If you can, lower your Multi to 6, and then start raising your FSB in increments of 5 until you crash/get a blue screen or can't boot, then back up to the last speed that worked. This will tell you what FSB your Ram can handle. Then Put the Multi back at 9 and lower the FSB to 200 again. Start Raising the FSB by 5 at a time until you crash/bluescreen/can't boot. Next raise the Vtt or Vcore by +1. Try to restart if it won't raise it again +1 until it does boot or until you reach a max voltage of 1.4. You should be monitoring your Temperatures along the way. Try not to exceed 70 degrees celcius for starters.
OCing is about trial and error and small steps, it is a long and tedious process. Read the Sticky note at the top of this forum for assistance.