[George]

O.K., try not double clicking it to send it over to the t.v.
Instead click and drag it to the right, off the pc monitor onto the tv.
Then grab the corners and size it to fit, and then double click it.
This normally will lock it in place.

No matter what, I'd suggest creating a restore point now that things are at least reasonably right. Then if it should take another dump, you have a reference point to restore to.

George