I have a laptop running Vista Home Premium. When I turned it on today it is saying Configuring Updates do not turn off. It gets as far as 98% then says shuting down, which it does, but when it restarts itself it's back to configuring Updates and reaches 98% again before turning off.
Try booting into Safe Mode (by pressing F8 as you start the laptop). If you can get into Windows that way your screen will probably look very odd (because the graphics driver won't have loaded) but you'll still be able to run System Restore, to take your registry back a few days. The instructions are here:
http://www.bleepingco...orial143.html#restore
Thanks for your reply Chris. I have to admit I had tried Safe Mode and was pulling my hair out as nothing appeared to work. When I Googled it would appear I wasn't the only one having problems in Safe Mode.