I really could have made this thread in the mobo or cpu section, but I decided to try here first. Upon starting my computer, every now and then I'll be alerted by my BIOS in this manner: "Warning: the CPU has been changed! Please go into CMOS and reconfigure! Your PC is now running in fail-start mode." When I go back into BIOS and reload optimized configurations, I won't get that message again. But after a shut-down and power-up, I get it again. It never seems to affect anything, but it's beginning to bug me, and if it's hardware I want to make sure I return it before my 30-day replacement guarantee is up.