Man T
I also have an A8NE. The fan you refer to is I believe the
Southbridge chip fan. Mine makes racket every once in a while
too. I have a fan I am going to replace it with ready for the next
time I
get a chance to do so. I also get the fan is running too slow
message. In order to replace the fan from what I have seen
you will have to unplug the pc (of course) and turn it on its
side. Then it looks like you have to drill out some plastic
rivets. Clean the chip of thermal paste and reinstall
the new one. ASUS had a lot of trouble with these fans when
they made this board. It is a real good board though otherwise.
Good Luck!
Plain
An update....
I removed the ASUS chip fan and replaced it with one with a solid
copper sink. I had to use a very small pair of diagonal wire cutters
to get the rivets out. Then because of the way my case is made I had
to loosen the MB and shake out the remainder of the rivets from the
back. Clean the chip thoroughly with rubbing alcohol and Qtip. put a
small amount of paste on. The new fan may come with a rubber pad to
fit over areas surrounding the chip heat-sink. Use the old one and an
exacto knife to cut a square opening in the new one so it will fit
surrounding the chip, not covering it. Depending on the new fan
model, you may have to trim the little ears that come with the new one
so they won`t interfere with anything else. I did. Then, with the
rubber pad already in place, put the new chip fan on the chip. Push
one rivet into its respective hole and then the other. When you
reboot, you`ll get a BIOS message saying your chip fan isn`t working
if the new fan only has two wires. If this is the case, go into BIOS
and disable the alarm for the chip fan. I didn`t like doing this
because I wanted to keep all alerts but I couldn`t find a fan locally
that had provisions for a speed output. Anyway, if you installed ASUS
Probe when you first put in XP, it may come up griping about the same
issue. Just go to "Settings" on the GUI and disable the program at
startup. It looks like if a fan goes down, you will be alerted in the
BIOS anyway. Good Luck.