Broken Hard Drive?

I restarted my computer and it ended up freezing at the BIOS screen because of my second hard drive, so I went into the BIOS menu and removed it, but when I auto detected'd it to put it in again, everything was fine but after saving and rebooting, there was no sign of the second hard drive in the hardware check during start up. Wtf?

>>6
Cool, that seems like the best solution, but how do I clear my CMOS or reflasg my BIOS? Do I just remove the battery for 20 minutes so it resets?