T61, Microsoft Bluetooth Mouse.
In spite of everything I've done, I don't get any response on the machine to the movement of the mouse.
I've turned on the Bluetooth broadcast (I can see the little light turned on next to the little light for wifi which is also turned on).
At some point, something happened because I got the usual popups about new hardware found but this was almost certainly the activation of Bluetooth.
There is a button on the bottom of the mouse to turn it on. I turned it on. There is another button on the bottom of the mouse to make the mouse discoverable. I pressed it (and, as expected, the light on the top of the mouse started flashing).
If I go in to Control Panel and select Bluetooth devices, I get the popup and in the tab "Dianostics", it says it's active and working properly.
Suggestions and guidance much appreciated. Thanks.