ok so i have replaced everything except the radiator and i am still getting readings from my temp. gauge saying that it is over heating, but when i put a temp. laser on the thermostat housing it says that is running at a normal temp.? why is this happening? please can someone help me? and there is no boiling in the overflow?

so i have done everything that i can to make my temp.gauge say that is at the right temp of 194 to 208.

the temp gauge says that it is running @ 100+ cel. and when i put the laser reading on the housing of the thermostat it say 194 195 and the same on all the hoses and the radiator, so my question is, is my temp gauge broke and i should just ignore it or what should i do?

there is no boiling in the overflow!