The question is can anyone confirm whether dxgkrnl.sys is loaded at startup in your respective pcs/laptops by enabling boot log in msconfig? I have had this problem since 10586 build. The problem was like my laptop shows blank screen (brightness dims) for a split second and then goes to lockscreen. It was probably due to the dxgkrnl.sys not being loaded at startup. I just want to confirm am I the only one facing this or not.