Clear CMOS using the jumper on the MotherBoard - refer to the user manual to find out where the jumper is located.
Sorry it took me so long. I ordered a new Zalman CNPS9700 NT
cpu fan. It finally came in yesterday, so I followed your instructions, found the CMOS jumper, jumped(?) it as described in the manual, and everything booted up just fine.
Thank you, Mouldread!