After After successful Ubuntu 13.04 UEFI Instalation, System booting into a blank screen instead of grub boot menu

After After successful Ubuntu 13.04 UEFI Instalation, System booting into
a blank screen instead of grub boot menu

I have installed Ubuntu 13.04 64bit version in UEFI mode. However at the
end of a "successful" installation, now when i start the pc, all i get is
a black screen with blinking cursor. I am not getting any boot (Grub)
options. i did a boot-repair with the help of the live UEFI Ubuntu 13.04
64bit Live USB and the output is here on this link
http://paste.ubuntu.com/5960503/
The only OS i am trying here is Ubuntu. So i believe there is no issues
with "Secure Boot" isn't it? The HDD is partitioned in GPT. Any
suggestions highly appreciated. Thanks