Let me follow up my previous posts (I hope to get some help to go on in my tests). Given I am a Mac and Parallels Desktop novice, I installed Parallels Desktop and created my first VM: I can manage it, that means that I can control it via keyboad and mouse. Then something happens (maybe I perform some mistake, but I cannot figure which one) and I cannot control my VMs anymore: I cannot use the "Enter" key to go on in the text based setup of a new Windows XP VM, I cannot use the mouse to shutdown another VM, I cannot start an application inside the VM just selecting the icon, and so on. If I restore my MacBook from a Time Machine backup to a moment just after installing Parallels Desktop and creating my first Windows XP clinet I know I can control my VMs again. After searching the web I found the article on page https://discussions.apple.com/thread/1271759?start=0&tstart=0 and removed all my USB device, with no success. Is there any way to restore the default keyboard and mouse settings, in order to remove my (possible) configuration errors? Regards marius