I have a Toshiba Satellite L40 Laptop, using Windows Vista. Randomly, whether on or off line, I could be in the middle of doing email or some other application, the system takes over and has a message "Windows is Configuring Updates" and stays on for awhile, and then automatically shuts down the computer. There is no option to cancel or delay or anything. Everything that I have been doing is lost, and I have to restart the computer.

Has anyone else experienced this problem, or is aware of it, and how to prevent the system from being taken over and shut down?

Thanks.

Control Panel... Windows Update... Change Settings.

surface: thanks for the advice. Have done it. Thanks again.