Windows 8 has failed to install

I have trouble installing Windows 8 on my 2012 15" MacBook Pro

I currently use windows 7 on my bootcamp partition works fine, tried upgrading to windows 8, with the windows 8 assistant goes through the loops. When installing seems to be going fine but then at some point during the process the screen just goes black and turns off; thinking this is part of the install, I left it do its thing. But 45 minutes later still the same status so I turn on my Mac boots into windows and shows the boot logo but goes into a black screen state, I force turn off then reboot again, then it saids "windows has failed to install restoring previous version of windows" and restores back to windows 7.

Anyone know why this is happening? I really want windows 8 on my computer