Windows movie Maker is adding Blue Colour to my Video’s when I use it to combine or edit my video’s. Original Video clips do not have the tinge

I am shhoting Video's on my DSLR model 7 D MK II. While editing the clips either to clip and than combine a couple to create a moview, the edited movie is adding blue tinge. How do I avoid that to ensure that my original shot colour remains unchanged?