[xfce] Can't log into Ubuntu

view full story

http://ubuntuforums.org – I tried to start my computer with a USB hard drive already connected and on(I was going to back up files). This led to a number of problems. First on booting the computer the screen showed this message " The disk drive for /media/Data Copy is not ready yet or not present" then offered option S to Skip, M manual recovery or wait. I tried skip and it gave me the grub menu which is odd as my computer boots through GPT. I rebooted same message again pressed S and I got login screen. However when I enter my password it starts booting and then just goes back to login screen. I am only abl (Hardware)