I installed Fedora 18 x64_86 on my laptop.
I have installed the KDE because GNOME was causing installation problems.
The keyboard stopped during the FirstBoot. I could not type my username or password, just selected time zone and moved on (mouse works fine). It was working well during installation. It isn't working since First boot.
Now everytime I boot into Fedora, the keyboard doesn't work. I can't login.
But when I edit boot parameters and boot the GRUB level 3, keyboard just works fine !
I had Windows 8.1 and now my system is a dual-boot (Fedora 18 + Windows 8.1).

Sorry for my english and I am new to linux.

during the installation process were you able to select your keyboard type as well as language? the new Anaconda installer for Fedora (since F17 IIRC) is no longer linear and allows the user to perform specific tasks like choosing the native keyboard layout out of what would typically be "order" for most installers.

This is a plus and a minus IMHO.

Also F18 is on its last leg for support, Id suggest trying F20 as it is the most current with F21 on the horizon to come out of beta soon.

https://fedoraproject.org/en/get-fedora#desktops

also as you can log in via the run level 3 (terminal only no GUI) are you able to activate the GUI once your logged in? as root you can type init 5 that should activate the GUI. if the keyboard still does not work, then the Xorg conf is confused and looking for the wrong input from the keyboard.

fedora 18 IS unsupported
fedora 19 is on the "last leg" and should have been unsupported already
it is that the release date for fedora 21 has been pushed back

please install Fedora 20 !