I used Eraser yesterday on two of my Laptops. One running XP Pro and one running XP Home. Both are Emachines. Immediatly after running Eraser to overwite unused disc space I rebooted and recieved the following Windows error "This Machine has just recovered from a major error" at which time I reported it. Reporting took longer than usual like it was downloading something and sending it. After rebooting I recieved another error, this time it was "The current BIOS does not match the processor in this machine" with a bunch of reasons. After sending the error report I was directed to MS Bios ID software page. None of this occured until after running Eraser and I mean immediatly on both machines (WHich I was running simultaneously).