System hangs on boot, reinstalling Arch doesn't help

view story

https://bbs.archlinux.org – After a recent upgrade (including the kernel), my system hangs on boot.  I have an Asus K40IN laptop, about 2 years old.  I've been running Arch for the life of the computer and never had any (serious) problems.I booted into a live Arch environment, tried rebuilding the mkinitcpio image, didn't work.  Tried downgrading the kernel, didn't work. I then assumed it was just some software issue that I couldn't figure out, so I reinstalled Arch.  No change.Here's what my screen looks like when it hangs:Any ideas would be very much appreciated.  I&#03 (HowTos)