When I quit for the day on my PC I always used "sleep" instead of shutdown. The monitor would go black and after a few seconds the power would shut down. That was normal. Now when I tell it to sleep the monitor goes black, the PC never powers down and after about 10 seconds does like a mini reboot then comes back on including the monitor. I have uninstalled any recent software that I've loaded. Even though I had my hard drive and monitor settings to never go to sleep from inactivity I was still able to tell it to sleep when quitting for the day. I am using Windows 10. I built this PC a year or so ago, so it's not a name brand. Everything else on my computer is OK except for this sleep issue. I can always tell it to "shutdown" but I would much rather have it go into sleep mode. Any help will be much appreciated. If there is any more info you need let me know. Thanks.