When Windows 95 came out and started crashing machines left and right, IBM quickly provided a solution in some machines (I can only speak of the consumer line sold at The Good Guys stores, as that's what I was selling at the time) that would speed up the process of restarting the machine. As the name implies, it was intended to reduce the time spent on going through BIOS and POST and checking the integrity of the hard drive and get you right back to where you'd been before the crash (apps open and all that). I suspect it did a core dump when the system crashed and tried to get back to the state it was in when it went down. The only real problem was that more often than not, it brought the system literally right back to where it had been: crashed. Reportedly redubbed Rapid Recrash, it retreated rapidly (thanks to grizzly for the alliteration). The only way around it was to get into the BIOS and turn off Rapid Restart during the endless loop of recrashing.