I agree with all the urgings to check RAM and such first, however, I do not agree that you could not have had capacitor damage in 1994.  My IIci had capacitor damage so bad in 1995 - 1996 that a via had corroded to the point that it was no longer connecting the trace on the front of the board to the back of the board.   The IIci is a newer model, so capacitor damage on a IIci in 95 - 96 would be about the same as capacitor damage on a IIcx in 1994.

I'm not saying you do have capacitor damage.   It's good to check all those easier things first.   However, do not discard the possiblity that there is capacitor damage.