Hi, i've just updated my parallels 4 to the latest 3810. I'm using the BootCamp partition with Windows XP SP3:the first boot was OK, updated Parallels tool etc.. The second one gave me the atacched bluescreen. My MacBook Pro: Riepilogo hardware: Mac OS X 10.5.6 (9G55) Intel Core 2 Duo 2.5 GHz RAM 2 GB Parallels Desktop 4.0.3810 I've tried to start in safe mode: same BSOD; Tried to run chkdsk /R in windows recovery console(booting from windows disk): if I boot in bootcamp everything goes fine. If I run it under parallels:BSOD Any hints???