Yeah, the CMOS and BIOS are the same thing (I think CMOS is actually the memory used to store BIOS settings or something - mostly the two terms are used interchangeably).
According to the manual the jumper is on pins 2&3 at the moment - you should just be able to move the jumper to pins 1&2 for about 10secs or so (maybe give it a minute) and then move it back. It's basically the same as removing the battery but (in theory) less awkward.
I've never worked out what makes that sound while it's counting ram and a lot of recent machines I've worked on don't seem to do it anymore so I'm not sure how much faith to put in it, but you can use any ram stick that the motherboard supports to test with if you just want to check if the ram stick has died but the dimm sockets themselves are good.
You mentioned testing hardware in another pc before putting it in this machine - have you/are you able to try the processor in another machine?
Good luck
