I had been running my E6400 at 2.4Ghz. It used to be fine and it has been sometime since I looked on the speeds. I did it the other day and saw it was back to 2.13 so I went into the Bios and put it back to 2.4. All was good...until I rebooted and it was back to 2.13. And again and again . I've looked around but cannot seem to find anything to explain why it won't hold the OC setting through a reboot.
Nope nevermind, went into the Bios again and now the O/C settings are there so it does seem that it was a battery issue. I tried the quick way the first time and those settings didnt seem to hold so I went back into the bios on reboot and tried again and it now has the original OC setting back