Hi, I think its a virus, because my microsoft security essential keeps on detecting the sirefef virus and whenever I remove it, it will still appear and will show the message "Window has encountered a critical problem and will restart automatically in one minute" I have done the farbar recovery scan. I will attach the log file. And I have also done scanning using MalwareBytes I will attach the log file too. I have tried system restore point.. It still doesnt work, it can only work when I go into safe mode in my laptop. And also I have attach my computer's specs log too. Hope to get your reply soon. Thanks!