Hi, As mentioned in an older thread here (http://www.wilderssecurity.com/showthread.php?t=178018&highlight=snpshot.sys), after having installed then uninstalled Powershadow 2.x, a driver remains active, snpshot.sys, which is apparently loaded with the kernel at boot time. If I try to disable it with for instance Sysinternals/Autoruns, I get an immediate BSOD at next boot. Solution is to revert to last good configuration (F8 + selection of the corresponding option), or restore a backup ! Does anyone knows how to remove that %$¤!#&!! thing ? Thanks !