I have a Samsung RV510 Laptop with a Broadcom 802.11N wireless adapter which keeps losing connection to my modem/router.I have updated the driver to the latest version.I have changed modem/router to test but no joy,also loses connection every few minutes.I am using a USB wireless adapter which works well.I am beginning to suspect the hardware now.Is it built in to the motherboard or can it be replaced?Any ideas what to do?Thanks