Indigo 2 - "NESTED EXCEPTION" at boot.

Edward writes It's an arpeggio of some sort, perhaps with a 7th. Haven't worked it out. Getting the boot-tune means that much of the computer is working properly. Try pulling the graphics and reseating the memory and processor module & memory and see what pops out on TTY0. It could be bad graphics (had that happen once in an Indigo), in which case there is a surfeit of XL/Express graphics boards around (I have an Extreme that I haven't used for years). Do you know what the hardware is? Another possibility is that someone tried to upgrade the processor module beyond what the boot PROM could support. Most of the time the machine will 'let it slide', but some cause issues (especially if it's a R10k on a R4k board). If you don't know for certain than describe: "module with a big aluminum heat sink and a small portion of board exposed that has several SMD memory chips on it" can localize it to one of 2 processor modules (R4400 in either 200MHz/2MB cache or R4400/250 with 2MB). Also give the IP number of the main board (it's near the riser for the GIO/EISA cards), and the model number on the back (CMNB007-something).