Overheating motherboard

[anothercodemonkey]

I have a three year old MSI K9N SLI Platinum 7250 motherboard. It has worked fine up until recently however the heat sink (marked MSI in the picture here -> http://images.highspeedbackbone.net/sku ... -main2.jpg) gets really hot, really fast now when I turn it on. I am lucky to get two minutes out of it before the whole PC freezes up and just dies.

Any idea what might be causing this? Is it possible to fix? If not, any recommendations then for a new ATX motherboard that would work with an AMD Athlon™ 64 X2 4600+, i.e. an AM2 socket.

 

[anothercodemonkey]

I'm not overclocking it.
All settings are default.
Don't know if a chunkier heat sink is the answer. Bit concerned it is getting hot so fast already.

 

[jcmoney111]

I can't see the pic either but, if you been runnin for 3 years straight maybe reseat all your heatsinks with some fresh compound. Maybe vac out you box, check your auxiliary fans, get more air flowing.