I just got a Google Wifi, and almost all our devices connect to the new network fine. The exception is an old Windows 7 Dell Inspiron N5110 laptop, which sees the network but isn't able to connect. It has built-in wifi, Centrino Wireless-N 1030. I tried rebooting and running Windows update, but it still won't connect.
I think the problem might be that Google Wifi supports 802.11n but the old network was 802.11g?