I'm using FP-IN9 board that come with stock bios 12. Tried bios 14 few days ago but no luck, it wont boot up at all unless i'm using the stock FSB so i flashed it back to 12. Saw lollie27 mentioned that he able to hit 2.9Ghz-3.0Ghz for his E4300, since i'm using the same processor so i'm thinking of giving a try on it.
Flashed my bios to 13, set my FSB to 1333 and boot with 3.0Ghz and it really booted in. Opened up CPU-Z and Everest and only found that my multiplier will change itself from 6 (2.0Ghz) or 9 (3.0Ghz). It will stay at 6 for a long time and then change to 9 for few seconds then 6 again. Rebooted in bios and check, it did show it's 3.0Ghz and 9x multiplier. The voltage in bios show the default 1.3x while in window it will change itself from 1.1 to 1.3 depends on it's mood.
Rebooted my computer and set it back to stock and guess what. The multiplier will continue staying at 6 and running my E4300 at 1.2Ghz. Flashed it to bios 14. Same thing happens multiplier will change itself, voltage will change itself and it will run at 1.2Ghz on stock.
Reboot again flash back the bios to 12 and now i'm able to run at 2.4Ghz smoothly without any problem. It can't go any higher anyway. So what's the problem actually? Is it i missed out anything when overclock (newbie) or is the voltage changes itself that caused it but it will not happen at all in bios 12, just 13 and 14.