Not the email you want to wake up to the morning before you go live:
"This morning during start up the exit test computer i believe has had another hard drive failure. on power up of computer when it starts into system load the HP start screen appears then it went black and the following text appeared. ERR3ERR4. I attempted to reboot system and it is now asking for a bootable disk in media drive. Any ideas on this?"
That led to troubleshooting, determining a bad hard drive, buying a new hard drive, discovering that our imaging software doesn't work with Vista, buying new imaging software, imaging a good machine, swapping drives, restoring the new machine, then configuring. Oh, and while we were at it we swapped machines in the container as a contingency as the one that died was mission-critical and the other was expendable. And of course the mounts are different (one-offs) so everything had to be swapped over. By the time the new machine was fixed we found it didn't fit in the other computer's mount unless we sawed off part of the housing. And finally, we figured that since both were now working we should switch them back as they fit in their housings better. That was around 2000. Will have to wait for the morning, right before we go live. Sigh.