Gigabyte GA-K8N-SLI overclocking problems

im having trouble with an over clock i have the AMD 64 3500 2.2 GHz and i boosted clock speed to 2.3 GHz not increasing the voltage or anything. so i save it to CMOS. then my comp restarts boots into windows perfectly fine so errors or BSOD's no overheating. but then when i shutdown or restart then my motherboard says it Post "Skip CPU over clock" (something to that manor) and then the BIOS clocks it back to 2.2 GHz then goes into Windows perfectly fine, but when i go into BIOS it still shows that its being over clocked. anyone have any ideas?

Thanks