Dual boot uefi problems

[amiacamal]

Hi all,

I recently bought an Inspiron 15 - 3521 preinstalled with windows 8. I have disabled secure boot and installed ubuntu 13.04 but I'm having a problem. If I just let it boot normally all I get is

PXE-M0F: Exiting PXE ROM
error: file '/boot.grub.i386-pc/normal.mod' not found
grub rescue> _

However if I spam F12 while booting I can select "Windows Boot Manager" which will boot me into grub as normal.
If I enable secure rom it says both windows and ubuntu are disabled by security setings.

My question is, How do I get my machine to load to grub instead of having to go into BIOS every time?
Thanks

[byStanderone]

...if i recol , read something about fast boot in win8...this option got to be disabled in win8, for ubuntu to mount properly.

[amiacamal]

Success! Thanks for that!