when importing a fbx made by blender unity close's and askes send error

unity close's when i import a model that i have made in blender, its a very high poly model it contains a lot of vertex groups,and it's rigged, i exported it in the .fbx format because i knew it's the best format to export to, unity usually works with it better ,at least that what i have seen in a tutorial from youtube, and i tried to import it in unity, by putting it in the assets folder ,and open unity and then put in the hierarchy, but when i do that unity just stop's, and do nothing doesn't even allow me to click or any thing, it just lags and then after a minute or so it just close's, and ask's if i want to send an error i will provide pictures of my computer statistics it's nothing to brag about but it work's :D ok here u go: process pic's are here link text computer statistics link text my email : marawanhany87@gmail.com