I think you really have to reset the BIOS. Yes it's probably the CLRTC "jumper" as was mentioned. Taking the battery out doesn't work (I voided the warranty on my 2 day old Athlon / Asus K7V system after I ripped out the "Warranty void if.. aarrrgghh!!" sticker over the battery, stupid store put warranty tags over everything, my dad didn't belive I could build the thing myself).
To short the CLRTC (if that's the name), just connect the 2 dots with something that conducts electricity. Alumunium foil would do, or yes a tip of a flat --wide-- screwdriver.
Hopefully the system will boot up afterwards. It should be in jumper-free to let the BIOS think for itself.
In my case, the PC wouldn't boot after I changed the RAM from 100 to 133 (I didn't know which it was), I couldn't reset the BIOS, so I set it from jumper-free to jumper mode and told it that the RAM is 100. Well, it booted, damn what a relief (considering it was my first ATX system, and my dad would probably not be very happy if we had to take it back to the store 2 days after we got it, with the warranty voided.. haha. But I won at the end :> )
Later that day, I was reading the manual again and saw the page about that "CLRTC" pin. Yeah, you know the feeling...
Well, in short, RTFM (Read the F------ Manual) and good luck!
By the way, I don't think you heard the thing check the RAM, nowadays they don't make any noise doing that. It was probably the harddisk spinning up. Try unplugging the power from the harddisk and you probably won't hear a thing. Or if it's clicking noises, it could be the CD-ROM drive checking to see if there's any CDs in it.