HP, as far as I'm concerned, has some of the most insane driver and software installs ever. They are right up next to Adobe, as far as craziness, some of the time.
At work, we just attempted to install the LJ M1530 multi-fuction printer. Of course there were issues as always with new devices like this in a proper enterprise environment. There are at least 5 workstations that the device driver needed to be loaded on. Once I hear that I wondered why I wasn't scripting the install.
So I downloaded the M1530's driver. The first thing I did was use 7-zip to unzip the contents of hp_M1530_MFP_full_Solution_usb_n_w.exe. I found the usual HP mess of install files with no useful instructions for a silent install.
I dug up what looked like the main install executable under the Installer directory and ran it with the /? argument.
hpbcsiInstaller.exe /?
The following text is what I got back