at work our furnace died, in the manual it listed a "start up" procedure, witch was quite useful, because of that i was able to figure out what was wrong.

SE/30 Start up-

So as soon as you hit the power switch,

? The CPU says anyone out there, Give me input

? Then rom says ok here you go.

? Then POST? Ram Check?

? Video?

? Then mouse Cursor?

? OS Strapping / Boot Procedure