Anyone successfully running minerd.exe on Windows 8.1 and Windows Server 2012 R2 operating systems?  Since I upgraded my OS's I can no longer run minerd.exe.  I've tried compatibility mode and various tweaks with no success.  I receive no errors to screen or event logs.  Machines just shutdown in a minute or two like the power plug was pulled.  If I boot off an image with Windows 7 it runs fine.