I upgraded to windows 10 this morning and after logging into my computer i am greeted with a blue screen saying that my computer needs to restart. This always happens about 1-2 minutes after i log in. 1-2 minutes is not enough to try to access any settings and do something about it. Is there any way to fix this? I am on a Lenovo y40 laptop that came installed with windows 8. There is no optical port so i cant insert a disk and go back to 8.