I am using Parallels 9, latest build on an early 2013 Macbook Pro Retina. I have been using Windows 8.1 since its release on Parallels. It gets 4GB ram and 2 CPUs. Some weeks back I noticed that I could no longer open control panel. This week explorer restarts every 10 seconds or so and the whole system has become unusable. This also happens in safe mode. Help! Debra
