Hi Arnold, the virtual machine is available on the Mac, once you install Parallels Desktop 11 for Mac it will automatically detect the virtual machine and you can use it normally. So basically uninstalling and reinstalling Parallels Desktop will not affect your virtual machine.
You can also try...
Hi @pnkearns, please check the view mode of the virtual machine, if you are using Coherence mode > Exit Coherence > Shut down the virtual machine > Isolate the Windows from Mac > then start the virtual machine and check how it goes.
Hi David,
Stop the virtual machine by clicking on Actions(from the Apple menu bar) > Stop.
Quit Parallels Desktop.
Open Disk Utility (Finder>Applications>Utilities) > Select the Mac hard drive > Run Fast Aid.
Reboot the Mac > Try to start Parallels Desktop and Windows.