David is having trouble with a Windows 10 computer he built that won't shut down or go to sleep. Leo says he has a Skylake laptop that has the same problem. He has a hunch that there's a power management bug in Windows 10 that has to do with drivers. It's likely that the motherboard drivers aren't handling Windows 10 power management like they should. One hopes that they will fix it quickly, but Microsoft hasn't been able to solve it so far. They're calling it a "difficult computer science problem," and it has to do with even Microsoft's own hardware.