I am having the same issue. My VM is set up with 7 cores and 10GB RAM with 1GB of video memory and DX10 with vsync enabled. I get the black screen every time after login. I've tried dropping down to the configuration recommended by @Meenakshi@Parallels above, but that did not work either.
In addition, the "reinstall parallels tools" option is greyed out so I cannot try that. I am also unable to boot into safe mode -- Windows 10 requires shift-F8 at startup to boot into safe mode, but neither holding this down on my keyboard during boot, nor attempting to send it via the "Devices-->keyboard" menu triggers a safe mode boot.
This VM is my primary work environment so I am now dead in the water. Can anyone please help me out here?
I've filed Technical Data for my VM, report ID is 239108280
Last edited: Jan 29, 2018