Fedora 23: black screen after boot

edit

I've installed fedora 23 xfce desktop on my laptop few days ago and it worked like a beauty.

After few days i did sudo dnf update. after the update i couldn't change the wallpaper so i restarted my laptop, and after booting up i get two option.. One for the previous kernel and one for the updated one. I tried booth but it keeps taking to a black screen with nothing but a blinking underscore (-).

I can hit e to edit the booting thing and add a 3 somewhere to get to the terminal. I tried downgrading xorg-x11-server-Xorg but it didn't fix the issue.

Update

I tried starting x from the terminal using startx and this is what i got.

xauth: file /home........./.serverauth.2093 does not exist.
xauth: (stdin):2 unknown command "some random characters"

X.Org X Server 1.18.3
Bunch of info about xorg and my machine

Parse on line 2 of section InputClass in file /etc/X11/xorg.conf .d/70-synaptics.conf
   "..." Is not a valid keyword in this section.

EE fatal server erro
EE no screen found(EE)

xinit: giving up
xinit: unable to connect to X server: connection refused
xinit: server error
[Ali@Almoullim ~]$ _

I edit this file in nano /etc/X11/xorg.conf .d/70-synaptics.conf and removed what was inside and now i get.

got.

xauth: file /home........./.serverauth.2277 does not exist.
xauth: (stdin):2 unknown command "some random characters"

X.Org X Server 1.18.3
Bunch of info about xorg and my machine

Waiting for X server to shut down (II) Server terminated successfully (0). Closing log file.
[Ali@Almoullim ~]$ _