[GIS] ArcMap Maps Show in Layout View but Not Data View

Question

I can see all my map layers in Layout view but get a blank white screen in Data View. Every help resource I searched seems to show thousands of questions and answers for the opposite problem.

I have tried zoom to layer and zoom to visible. I have tried setting display to wire frame and to always display. There are no red x's on any of the map layers and the source path's have not changed. These were all working fine yesterday.

This morning it was good, then I zoomed in and got a blank layer, zooming back out didn't return to the previous map. Pulling my hair out. Using military map deck made for CPOF, if that information is helpful to anyone.

Version 10.1
Problem exists on all saved and new mxds.
Problem exists at all scales.

Answer 1

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Turns out it was a memory problem. Split up the personal geo databases and it works fine now.

I had one personal geodatabase with multiple Military Analyst catalogues in it. When I switched to just one MA catalogue in each file geodarabase it worked.