Windows 8.1 bootcamp setup, now when rebooting I am getting permanent Grey Screen
I have Yosemite installed on MacBook Pro 2013, created bootcamp with 8.1 and installed with no issue.
Been using Windows 8.1 successfully for over a week. Needed some files from my OSX so used the bootcamp option in the taskbar to reboot to OSX and copied the necessary files to a ext hdd.
Now when I set reboot to WinOS (Bootcamp) I am stuck in permanent grey screen. What I can do to try to figure out what is wrong, as the partition is NTFS, Disk Utility does not work.
I can boot back to OSX with no issue, can't seem to get back to the WinOS.
I don't want to start all over again, took me 3 days to get all the software and configurations installed successfully...
Actually this may be another problem, originally I installed Win 7, once installed I upgraded to Win8.1, could this be an issue? It has been running successfully for 5 plus days??
MacBook Pro, OS X Yosemite (10.10.2), Windows 8.1