Posted 23 April 2013 - 10:58
I've also noticed this recently on my Windows 8 install. I did a clean install of Windows 8 around last October, this has probably happened for the last two months or so.
I leave my PC on stand by so it only re-starts once a month for Windows updates, however if I do re start i've noticed the last few times I have got a black screen. If press the power button on my tower the black screen will go and the login screen will instantly appear. Alternatively I found that if I remote desktop in to the PC that also makes the black screen disappear and the login screen appear.
Motherboard: Gigabyte GA-H67N-USB3-B3
GPU: Sapphire HD 6870 1GB
OS: Windows 8 Pro x64