Closing and restarting Parallels worked for me
	
 I have Parallels Build 7.0.15054 and today ran into the same problem. I also never had this problem before. But, simply closing and restarting Parallels fixed the problem, even with the desktop merely suspended. Thank you.
					 
				
			
			
			
		 
		
		
		
			
			
				Last edited: Jan 17, 2012