If all works correctly in Poser 12 and previous versions, If you do not have Black screens on Blender, Daz Studio etc then it is most obvious that your computer is working in a correct way. I mean if there are no similar errors on other 3D applications or programs you are using then the Problem is most likely in the poser version it self. The way you mentioned the issue does not seem to be a Driver issue or a computer issue, if it were then you would of noticed it already before Installing P13 on your machine, trying to fix the computer because one program is not working right might cause to break something else. It already happen to me and I learned the hard way. You might have to concentrate on the Poser Install it self, Clean it fully out, Install on another path, use a older version release, do not try to fix windows or drivers if all other stuff work like a charm.

make sure to Kill these folders before making a new install, or use a appropriate uninstaller that removes any trace.....

C:\ProgramData\Poser\13

C:\Users\????\AppData\Roaming\Poser\13