This is a sample video showing how to install Ubuntu 14.04 in UEFI Mode.
Wanna support me? Visit: / nehaljwani
For Acer Aspire Guys:
The solution after a lot of tests... That could be useful for all of those who are in trouble.
1º- Enable secure boot (that makes menu available en security options)
2º- Choose "Select an UEFI file as trusted for executing
3º browsing till find ubuntu folder and choose the file on it.
4º That makes ubuntu available to be chosen on the menu on BIOS.
5ºSelect HD for the first place(grub is on it from ubuntu instalation sda)
6º Disable secure boot