I have a lenovo laptop with windows 8.1. I wanted to use ubuntu alongside windows. Hence, i downloaded the ubuntu 14.04 iso and created a live pendrive using Universal USB installer. I disabled secure boot and booted from the pendrive. All i get is the GNU GRUB command line version 2.X. I don't get a GUI for the GRUB and i don't know how to boot into ubuntu from the command line. I searched quite a few online forums but in vain. Can someone tell me how to proceed? Thanks in advance.