Originally Posted by tivaelydoc
875P (canterwood) chipset, ABIT IC7 (G?). I used a lot of air to clean it. It's a stock mobo fan. And there is only one.
I used to own a Max3 version of that board and iirc it had a northbidge fan on it too.
Having Googled images of the board I find that there is indeed a Northbridge fan, is this the one in question or are we talking cpu fan?
EDIT: OK seems as we didn't get a reply I'll go with the NB fan, there are really only two options, ghetto fix and replace.
Ghetto fix: gently lift the sticker on the centre of the fan and add a drop of light machine oil (sewing machine oil works well) just one small drop, replace the sticker, lay the case on its side so gravity can assist the oil in entering the bearing, leave for a few hours, you can run the pc with the case on its side just fine.
Replacement altenatives - depending on the board (Max3 v G) if it is a G you could probably source an after market fan, if it is a Max3 you will probably need to contact Abit
Other alternatives - complete NB cooling replacement either fan cooled or passive.