The issue could be the outdated drivers that could be the cause of the Linksys Router Error 651. Make sure that you download the right drivers according to the operating system you are using and then install it. If you show any error or update about Linksys Router, Just dial Router Error Code toll-free number USA/Canada: +1-888-480-0288 and UK: +44-800-041-8324. We are 24*7 available.