Color casts on laptop displays can be the result of the white point selected. Very often the native white point on these displays is lower than the white point selected. When this is the case, the software based calibration uses curves to raise the color temperature. Driving the monitor to the higher color temperature can lead to a magenta cast.
 
Example: If the native white point on your monitor is 6200K, but 6500K is selected as the desired white point, a magenta cast could be the result.
 
The proper strategy here is to select "monitor native" as the white point.