Noise from Computer Tower

I am just wondering if an official noun name has been given for the following noise? And please read this entirely before submitting your answer.
Its a noise that comes from the Computer Tower that sounds like a Geiger Counter? It can also be said to have a very fast, medium, or slow clicking or ticking sound. But the sound is best described as sounding like the noise made when a Geiger Counter detects radiation. I don't know if this sound can be heard in the most up-to-date computers of this day. But on the older ones especially it was a very prevalent sound. This sound occurs when my virus software is doing a scan. When this sound is being made, I experience a slow down of being able to open programs and etc.

Now I've gotten three answers from people who wanted to give me a solution for a problem when all I am asking is if there is a name for the noise. I have no problem. So for the people who submitted answer posts #2 and #3, please read my response in the #4 post.

Today I have edited my question in such a detailed way so there should be no confusion that I am not asking for a solution to a problem. I am asking if anyone knows if a name has been assigned for this noise. I already know why it happens.
Where it comes from - (like does it come from a speaker),
and how its produced - (like does it come from a component),
would be nice to know.

But the basic question is: What is the name of the noise called?

 

sounds like your hard drive, mine made that noise before it died..BACK UP now just incase

 

A quick check is to remove the side cover from the case, then when the sound is occurring, see if you can isolate the sound to a particular component. It does seem to be a hard drive making this sound, but if it is what is known as the "Click of Death" it should be present anytime the hard drive is being accessed.

Understand though that some hard drives are not as quiet as others, and when doing a virus scan, you are placeing heavier activity on your hard drive than average daily use.

 

Not sure if you understood. I said the noise occurs when my virus program is doing a scan. There aren't any problem I am incurring. I just want to know if a name has ever been given for this noise. Believe me the noise would have occurred when the hard drive was brand new.