Indeed Saab. There used to be a pub quiz m/c called 'who wants to be a millionaire' going back 10 years or so that ran on NT4 that would quite often fail to start and go into the Chkdsk routine, unfortunately there was a watch dog system that would reset the PC if the rest of the m/c saw no output for a while.
Pub L/L's would see the message after they switched on in the morning and leave it restarting Chkdsk every 2 or 3 mins until the engineer arrived and rescued the poor thing by using an unraveled paper clip to short the watch dog signal down to 0v at the appropriate plug. The m/c would then complete Chkdsk, repair it's self and fire up in about 99 cases out of a 100. (usually the paperclip got left in place)