Note: Existing Parallels Desktop® for Mac users are not recommended to move to Parallels Desktop App Store Edition. Brought to you by the world-class developers of the #1-rated Mac virtualization software.
If you use a virtual machine in Full Screen view mode move the mouse to the top of the screen and wait for 1-2 seconds to open the Mac menu bar. To force restart Windows in Parallels Desktop go to Actions on Mac menu bar click Reset. To revive Windows a simple system force restart helps on the real PC.