Have a Lenovo laptop with a 7260NGWR) wifi/bluetooth module which has had minimal (but reliable) bluetooth operation for the last couple of years. Last week I upgraded my dongle bluetooth mouse to one with native bluetooth. (Logitec M557) which then stopped working after a day. Tried all sorts of things, and eventually got it working a day or so later after reinstalling the bluetooth drivers. Then a day later it stopped again. Then started again a couple of days later without me doing anything. Now it has stopped yet again. When it works I am able to use my QC35 headphones with no problems, but when the mouse stops working I am unable to connect the headphones to the laptop while the mouse it turned on. (The laptop says it is connected to both the mouse and the headphones, but the headphones, and I assume the mouse, can't see the laptop) Are there any bluetooth tools available to help me track down why my new mouse doesn't want to play nicely with my laptop and QC35s?