The issue involves a small number of units which may overheat due to a wiring problem. Sony has initiated a voluntary program to perform a free inspection and, if necessary, a repair to ensure these units.  To find out if your VAIO notebook is one of the affected units, please visit this link: http://esupport.sony.com/fixmypc. You will be prompted to input your product code and serial number located on the bottom of the notebook. It will be checked automatically against the range of affected units. If you find that your PC is one of the affected models, follow the instructions on the website and make arrangements for an inspection. You may also call the VAIO TZ customer hotline at 1-888-526-6219 to determine whether your notebook computer is affected by this issue and whether service is required.  At no charge, Sony will provide an inspection and, if necessary, on-site repair at your home or office. Alternatively, you can ship your notebook to their service center. Source:http://esupport.sony.com/US/perl/news-item.pl?template_id=1&news_id=272