See the whole screen when installing Linux on VMWare vSphere 5.1.0
I had this issue once before and I googled around and found this link.
We were able to fix it by disabling the DPI settings in the file properties. To do this, right click on the shortcut and choose Properties (if you don't see this but instead see "open file location," click that and then right click -> "Properties" on the file from windows explorer) From there, go to the Compatibility tab and check "Disable Display Scaling on high DPI settings"
Hopefully this helps somewhat.