Chipset Fan

I have just built my new pc about the first week of Oct. I have a Shuttle AK31v2, Athlon 1.4G,512MB PC2100 DDR. Shortly after I first started my system I noticed a humming, buzzing sound, about 30 seconds apart, lasting 2-3 seconds, then it stopped. Here lately it has started up again, and seems to be more frequent, I thought it was my hard drive at first, even though it is only 1 yr old, but I discovered the other day it is the fan mounted over the chipset. What could be causing this, and can I stop it? It is somewhat annoying, but I also worry about it causing some harm to my system. Also I noticed 2 spring loaded buttons located diagonally from each other on either side of the fan, what are these? Thanks for any help...

i have this pb with my new cooling fan for 1 wks or 2

& i ask me, this fan is some [-peep-] !

but after this period, no still buzzy sound, the fan was quiet, but the sound originate from the blades & the electric engine, not the springs

i think it sound just because it was new & you have to wait for an adaptation period

maybe it's also your case

EasyInfo
I would like to Invest for my PC !!
ok, buy nothing.

I had the exact same problem with my A7V133. The problem developed after about a week of operation. According to Asus, this was a common defect with that board, and they sent me a replacement fan. That worked fine for about 8 months, then the same problem developed. I'm beginning to think it's a design defect in the fan (Asus sent me two more, a replacement and a spare, which I have yet to install). Anyway, the problem for me was the fan itself (possibly a bad bearing). The problem was definitely heat-related: once the system "warmed up" for 20-30 seconds, the problem was gone, and even a full shutdown/restart would not show the problem unless the system was left off for several hours.