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Thread Starter 
Hi everybody.

I'm trying to oc my E8400 to about 4GHz.
In my bios I can either simply select overcloking profiles, varying from 5% oc to 30%. I currently have a 20% oc, and my system is running very stable. So I want to do the 30% overclock, but it's not letting me.
Everytime I start my pc with the 30% overclock, it tells me to 'reboot and select a proper boot device'. When I go back to 20% oc, my pc boots fine. So that's one thing.

I can also go into manual mode, and I'll have the following options:

When I go into Jumperfree configuration I have:

AI Overclocking; manual, auto, overclock profile, test mode
(when in manual) CPU Frequency; 133 - 600
DRAM Frequency; auto, 667MHz, 800, 1000, 1100

1.8V Dual Over Voltage; auto, 1.80V, 2.00V, 2.25V
VTT_CPU Over Voltage; auto, 1.2V, 1.3V
1.25V Over Voltage; auto, 1.25V, 1.4V
1.5V Over Voltage; auto, 1.5V, 1.6V

I don't really have an idea what to do with these, can somebody help me out on this?

Thanks