I'm not sure what to advise you what to do about your specific motherboard, but I've got my mobo temp at 84 degrees F (29 C). This is how I configure my mobo:
Run computer with my side panel off at all times. (Some people have a fan blowing on the side of their open computer case).
Install PCI fan seen here:
http://www.newegg.com/Product/Product.a ... 6835888112Replaced all aluminum heatsinks with copper heatsinks. (Northbridge & Southbridge).
Install video ram heatsinks.
Install copper Zalman fan on video card.
Install memory with heatsinks.
Place heatsinks on largest chips on the mobo itself.
If a fan alarm is going off, it most likely means your computer is telling you your mobo is running too hot. You might want to consider buying a new motherboard.