Best way to tell before hand if your computer is going to physically explode is when you get a message saying "Windows needs to restart to install an update." Then you need to get the bomb squad asap. It will be as bad as a furnace explosion.

For some reason most cases happen on the 2nd Tuesday of each month. And sometimes the last Tuesday.

Every time there I run into trouble on the road, there is always a dwarf at the bottom of it. Don't they know how to drive above ground?