Furthermore, if I take the laptop to a repair shop, I assume that they will have to open it up to visually inspect the hardware to see what seems to be broken/malfunctional. (i.e. dust buildup, fried ...
The best way to get a good calibration(really profiling but...) is to get hardware. If you dont, you wont really get it as good as it can be. Still, the color temp is ...