A software update may help your issue. Click Here to download mytomtom. Install the program. Connect your unit to your computer and turn it on. Allow it a minute or two and then run mytomtom. The application will open up in your task bar in the lower right hand corner. Right click the icon and click check for updates. If updates are available, install them. Once the updates have been installed, remove your device from your PC and allow it to restart. Take it outside in clear view of the sky, keep it stationary, and allow it about 15 minutes or so to obtain a signal. It usually will pick it upwithin a few minutes but sometimes getting the initial signal takes slightly longer.