Im going to asume building A that has the Archer where is the internet provider (ISP) 1-as told before reset your 2-7210s to factory default 2-Quick Set up,next window Operation Mod ,select third row...

start by resetting your 2-7210s http://www.tp-link.com/en/article/?faqid=202 assign different IPs to both of them they have to be out of your DHCP scope, this IPs have to be in the subnet of your...

If 30/30/30 did not work, nothing is going to work, 30/30/30 includes using reset button so try to get your RMA

watcherman hi guy, you are using 730re v1... discontinued already posted Hardware Version 2 and even Ver 1 has nothing to do with this issue macleod did you try in Wireless Settings changing Channel...

" I Agree" button 5210 it's not an antenna or a wireless card it's a CPE, I doubt 5210 it's able to be set to a I agree wireless, C/P from other forum I also worked on hotel tech support internet...

C/P from other forum 1-if you use VIPRE Internet Security disable firewall and active protection. 2-Don't know if this is your case but I see many user having problem with Virtual Box and Windows 8.1...