Hi, I have the following problem. I installed a Parallels on my MacBook, with WIndows XP. The Windows XP is installed with BootCamp, so Parallels takes the WinXp installation from BootCamp. It never worked well, I want to disinstall it. But I cannot switch the winxp off: when I open the windows in the parallels it is so slow that it takes hours to do anything, and I am not even able to select the switch off button in the windows system. So I have to kill the parallel process. When I do that, I cannot restart the windows from BootCamp: when I select windows from BootCamp, a black screen appears, asking me if I want to choose "Paralles" or "Windows Xp". Consider that in this moment I am not in the MacOs, I am at the beginning of everythin with a black screen, so the Parallels installation doesn't make sense at this stage. The default is "Parallels" (and it takes very short time to start, something like one second). If "Parallels" is started, Windows does not start, it complains about a file missing in the system32 folder. If I am very fast, I can select to start "Windows" and it works, it starts, and I am happy with this. But I would like to avoid the blanck screen at the beginning, I want to start Windows directly. I suppose that the black screen will disappear if I manage to switch off WIndows from Parallels, but I don't know how to do that, it is completely stalled. So please, give me some suggestion on how to solve this problem. Thanks.