kerry12 wrote:
I had that problem a couple months ago, and it turned out that I had interrupted an update being installed. It took a day and a half but I was finally able to restart it. It to is an HP Envy. Hope this helps.
It may have been something similar. I left it as it was and went out for dinner. A few hours later I found it had sorted itself out. Works fine now. Thanks to all who replied. YNY.