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Here’s what happened: I had three computers to install, same make and model on each of them. I hooked them up to the network, and started the RIS install. Files load to the computer, no problem, then the computer reboots.
Immediately after the setup starts, the computer goes to bluescreen, claiming a Stop: 0x7b error.
Checking around the web a little, I find that a 0x7b stop error is caused when the “configuration is missing a component that is required to boot your device”.
Adding to this the knowledge that the computer was running a SATA hard drive, I went to the BIOS, where I found that the computers were set to Enhanced mode for the drive in question.
Now there’s your problem. It cleared up nicely as soon as I switched to Compatible mode.