There are SCADA systems which use Windows to run some logic/graphical front-ends to the system. Unfortunately, some of these systems are misconfigured in that

There are SCADA systems which use Windows to run some logic/graphical front-ends to the system. Unfortunately, some of these systems are misconfigured in that individual PLC's cannot adapt to changing conditions without first getting confirmation from the services running on the Windows boxes. If Windows crashes, whatever state the system was in at the time persists! It's a shame configuration issues arise in systems like these...