Question : Problem: Server 2003 Motherboard temp goes up to 125 C

Hello Xperts

After Rebuilding a server in like 20 days, the motherboard of this server's temp goes up to 125 C and start to freeze and everything stop responding ....

I donno what's wrong or what could be done to diagnose the problem and to just make sure if it's the motherboard or something else?
I have Corporate edition of the program Everest and the Fintek Sensor is reading the 125 C of the motherboard temp.
All the other Devices i.e. "CPU, HDD, VGA, is below 40C"

Note that this is a Normal PC but has windows server 2003 installed on it.
Has 1 CPU fan .... I have checked the heat on the board... It's quite normal and cool..

Answer : Problem: Server 2003 Motherboard temp goes up to 125 C

does the BIOS on that mobo give temperature readings too?  Although the system won't run at full throttle when just displaying the BIOS screen, it'll get a bit close at least.  This would rule out a software error.  

I'd also try Motherboard Monitor too
http://majorgeeks.com/download.php?det=311

what mobo is it?