I have bought a laptop with pre-installed windows 8.1 After following all the steps from this article. (Installing Ubuntu Alongside a Pre-Installed Windows with UEFI). I tried to install Ubuntu14.04 in my laptop and i got the grub menu. I have tried installing ubuntu many times but i always end up here. I don't know what to do next. I had disabled the UEFI and the secure boot but still to get to the grub menu also i needed the DVD using which i had installed ubuntu.. please kindly help and as this is my question on the forum i am unaware of what system details i should provide.