First of all, welcome to BC - both of you !
Two possibilities for you to think about trying.
The first is, if you don't use bluetooth in any form on your computer, uninstall any blutooth software you find on your computer. 'Start - Control panel - Programs and features'.
The second is to disable any bluetooth services from starting at boot. Click on 'Start' then RIGHT click on 'Computer' then click on 'Manage' in the menu box that pops up. This produces a dialogue box with, on the left hand side, a list that finishes 'Services and Applications'. Expand this, then click on 'Services'. You will then see a list of all the services on your computer, and their start-up conditions (you may want to maximise this dialogue box). By clicking on any bluetooth services you find in the list you will be able to change their start-up conditions to 'Manual' or 'Delayed'.
'Manual' means the service will start when you call for it; 'Delayed' means it will start at some little time after boot.