Re: Loading problem...?
Post the output of the above command. Its important.
To put it simply, UEFI (earlier EFI) is the replacement for BIOS. BIOS is 30years old interface and has limitations with newer hardware. To boot in UEFI we need GPT (GUID Partition Table). Most of the new OEM machines have UEFI. Most of the Windows8 preinstalled machines do. If Windows 8 is booting in UEFI then Ubuntu too needs to be installed in UEFI. To install Ubuntu in UEFI/EFI, the LiveDVD/USB needs to be booted in EFI mode.
The link I posted in my earlier post has most of the things you need to know about UEFI and Dual booting with Windows8. You must read 'em.
Once the requested output of 'sudo parted -l' is provided we can help you precisely.
"Evolution is Nature's way of issuing upgrades."