When you change wireless password, did you change wireless network name as well? If not, to connect the same network using new password, you have to forget the network and reconnect. Your Win 8.1 can...

Did you upgrade the latest firmware, Archer C2_V1_140716? http://www.tp-link.com/en/support/download/?model=Archer+C2&version=V1#tbl_j

It is strange that it just happens for no reason as your description. There is no any other way to reset it if you cannot login its web interface except hard reset. So if your device is still under...

Matt, I agree that it is quite simple to login web interface of the router normally. Lights on your device are normal? Did you ever check IP address obtained from WDR4300? If it is 169.254..., you...

Read this article. http://www.tp-link.com/en/article/?faqid=465

How to configure it as an access point? http://www.tp-link.com/en/article/?faqid=417 To roam,your home hub and AP in the roaming network should have the same Wireless Network Name(SSID), same...