Computer shuts down after starting web browser etc. in fresh Arch install.
I re-installed Arch last night as I noticed a while ago I was using 64bit and had been meaning to get around to switching to 32bit.
The install went fine, but when I install xorg and a window manager (I tried dwm and openbox), and start a web browser (I tried midori and luakit), my laptop shuts itself down as if it had overheated or something similar.
At first I thought my laptop was having trouble, but I'm currently booted into a manjaro livecd (I know), and can browse etc. with no issues.
Any ideas on what might be causing this, or what I can post here to help troubleshot?