critical temperature (127 C)
if you know your fan, hardware etc is fine, try acpi=off
at kernel boot up
It sounds like either HW problem or misconfiguration
of the censors (you can did later into lsmsensors /etc/sysconfig I think) or /etc/sensors.conf
Welcome to LQ, just try a better longer title next time
and try to state your exact configuration
Is this a laptop?