====Temporary Fix====
Seems to be an ACPI problem as hinted by the line it hangs at, here's a quick fix

At the bootmenu, highlight one of the text options (seems to hang on a black screen if you select KDE) and then press TAB and append
" acpi=off" to the line and press enter which will lead to to a text login. Use the usual root:toor and then type "startx" and you're into KDE