P2B boards had the system message leds. The board is <strike>very</strike> relatively old and support may be hard to find.
It is still an ami bios isn't it? If so go <a href="http://www.compguystechweb.com/troubleshooting/bios/ami_errors.html">here</a> for a list of ami error beeps and how to correct them. The guide is saying that three beeps indicate a problem with your base 64k memory.