I have two hypothesis: 1) the chipset is not compatible with the new processor, 2) the BIOS is not up to date.
Yeah, I would think that the processor isn't compatible. Likely the voltage is too high on one of those pins.
vinskamuha, you could also try resetting your BIOS back to factory defaults, and then try reloading Windows. See if the processor is properly recognized in the BIOS.