Ferrariassassin :
Marklamarkle :
Windows 8 does hang at a black screen for a while when booting up - especially if you have a slow hard drive. Give it a minute or two and it should be fine.
I installed it on my Samsug 840 Evo SSD 120GB and it restarted and sat there for 40 minutes so i went ahead and turned it off and back on and when it comes on it does not put the display out its like my Monitor is not picking it up or somehting
you could try re-installing. if you have another computer try a different windows 8.1 iso and burn it to a USB or something. make sure when you re-install that you format your WHOLE drive.
do anyfans spin? can you open BIOS? if you can open bios then we know your GPU is not broken (hopefully)
source: experience (believe it or not, this has happened to me many times)