Unfortunately, it still boots to a black screen. I can move my mouse cursor around but nothing else. =c
Are you able to access in safe mode with network? If you are, then delete ComboFix.exe icon (drag&drop into recycle bin) and download fresh copy.
Try to run ComboFix from safe mode with network. If CF ask for reboot, load again in safe mode with network. CF shall continue there to finish his scan.
After that, reboot again and try to load in normal mode.
If you fail to run CF, re-run FRST from RE and post me fresh FRST.txt log created in RE.