Recently my computer has stopped responding about 4 times now just when Windows starts up. It crashes when the loading screen is still fading in. I force-shut down by holding down the power button, then the bios asked me if I wanted to start Windows normally or use my recent "good" setting that worked. I chose the good settings. Is there a way to deal with this problem, because I don't believe I have a virus or anything. And it only happens about 20% of the time.