Yes... I know... that temp is far too hot. Indeed at that temp your CPU would be fried. And it isn't - you can still boot, right?
Which tells us that the CPU temp sensor is probably over-reading. It's very common.
So: run the Cold Powerup test: 1. Let your machine cool down (overnight) 2. Power on, and go straight to the temps in the bios. 3. Take the System Temp and the CPU temp, and compare them to room temp.
At the instant you power the machine on, the System and CPU temp should both equal room temp. Any significant difference is a calibration error.