I tried overclock my board then my computer shut down after "starting windows" screen (where the four color form to MS symbol). I reset CMOS then it booted fine. But every time I tried overclock in BIOS then the problem happens. It's really weird because I can overclock (using the overclocking tool from Biostar) in windows mode when I reset CMOS, but I want to change settings using BIOS. Any ideas?