Still haven't got this sorted? It's a little strange, there must be something that's been missed in the bios. Something that needs to be checked or unchecked.
Send us screen shots of every page in your bios.
There's a lot of mixed advice on this thread. You can overclock using the turbo, or not perfectly fine but if you turn the turbo off you have to set the OC is a different part of the bios. Usually next to the base clock frequency.
Also things like power saving modes, c1e, LLC and spread spectrums are not going to make very much difference at all to an everyday overclock let alone prevent an overclock entirely.