RonBoyd
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
For those with an old PC (anything over two years is "old"); another trick to try back up anything you value and then do a full reinstall (preferably after reformatting the drive.) This is potentially "free" except for the time required to reinstall your programs and data. Reward: a fresh install without the "barnacles" any system gets over the years.
I guess that is how I should have said it earlier... without all the details.