A week a go my whole Win7 machine just disappeared off my MacBook Pro. Parallels was still installed but Windows and applications were gone with no warning. I bought a new W7 install disk, did the install and added back by programs. Just after that I got a screen that said not to turn off machine or reboot because it was updating the WIndows system update 112 of 191. That screen has locked the WIndows system and I have tried everything to get it started again. I want to try a safe start of the system (which is usually holding the F8 key) but that does not work. I'd like to avoid a whole new install again. Parallels help doesn't and seems not interested in my problem.