New router bought for Xfinity works fine with everything but my two laptops. About 10 years old and running Windows 7. I can't update security and I can't update the device drivers so I'm stuck. We started using a router approved by our internet company and there's been no issue except with my two laptops. Absolutely nothing was done to incorporate the cells or any other equipment and they work fine. I've tried everything I can. None of the troubleshooting that I'm able to get to work without internet is showing anything other than I'm not connected to a network. But I'm being told that I am nothing was changed.