john, here are the POST diagnostic beeps for your computer :
One= Possible system board failure —BIOS ROM checksum failure
Two= No RAM detected NOTE: If you installed or replaced the memory module, ensure that the memory module is seated properly.
Three= Possible system board failure — Chipset error
Four= RAM read/write failure
'''Five= Real Time Clock failure'''
Six= Video card or chip failure
Seven= Processor failure
Eight= Display failure
So, there could be a problem either with the CMOS battery or the motherboard. Hope this helps, good luck.