Hi freezone, and welcome to TSG.
The problem may be related to
specific hardware or BIOS on your computer. Can you please provide the brand and model number of the computer, brand and model number of the adapter if you are using an add-on bluetooth adapter.
Also please let us know this has always been happening or if it just started up as a new problem. If it is a new problem, have you done any recent Windows Vista updates or installed any new hardware or software.