I gather your objective is to pair your bluetooth earbud/headset to your mobile phone. Is that right? If so, the computer has nothing to do with this. So, forget about it and leave it out of this procedure.
Is your phone an Android device? I recently paired a bluetooth head piece to my Android phone but I'm not sure I recall the exact sequence of the procedure. You do need to open Settings on your phone and activate bluetooth if is not already activated; on new phones, the default setting is probably Off, as it was on my phone. Then, once bluetooth activation on your phone is confirmed, turn on your bluetooth earbud/headset and listen or look for an indication from the bluetooth earbud/headset and/or your phone. If you pay close attention, you'll probably see or hear an indicator that the pairing was successful.
Many videos on this can be found on youtube. If you need further assistance, post here again and provide some details (make and model) about the your phone and bluetooth earbud/headset and I'll try to assist further.