I just received a new Inspiron 620 direct from Dell with WIndows 7 pre-installed. Every couple of days I see a message in the lower right hand corner of my display tha reads ".Windows 7 Build 7601 Not Genuine". If I reboot or attempt to reactivate the software, the message will disappear. However, it will reappear a day or two later. Why is this happening and what can I do to fix it?