>whole screen goes grey
I hope you mean you installed GNU/Linux, if you just "installed" Linux without the GNU coreutils then you're in for a world of trouble.
I don't know why anyone would install Arch. Pacman is nice and all, but still, doesn't make any sense as a newbie distro and doesn't make sense for most experienced users either. Don't get me wrong, I'm not saying Arch is bad once you know the system. It's just that most people will choose something else. Arch has a great Wiki, but I don't see the point of choosing Arch of other distros.