A few weeks ago, my little cousins were using my Dell M6400 laptop when it suddenly stopped working and the screen wouldn't turn back on. I had already accepted this to be the end of my old trusted laptop when I did a little internet search to see if I could fix the problem. I came across this page and followed the fix for the windows 10 bug.. I was so shocked when it worked! I highly recommend you follow these instructions and I already silently said goodbye to my laptop. Thanks so much!