If it doesn't stop due to the RAM, I would point CMOS corruption and keyboard error to be next. After this comes FDD failure (int 40) and OS boot disk issues (usually HDD).
Of course that the most likely error of all is caused by a forgotten diskette in boot drive A:. After it is the Keyboard error (just need to forget one book over some keys...). But these are harmless.
How terrible is wisdom when it brings no profit to the wise<P ID="edit"><FONT SIZE=-1><EM>Edited by Arbee on 08/06/01 07:51 PM.</EM></FONT></P>