..it's most likely the graphics driver... .. suggest trying other graphic drivers (old and new)
...and, since it is 2012, I don't believe it supported under windows 8.1?
...there is no current info about driver/support for 2012... but this is what it shows for 2015/16..
...lastly, it maybe be a install issue (do a repair or re-name registry old trick)
Thanks for the feedback. After running through a few iterations of drivers I found 348.17 restored my realview functionality.