Hello, You can try to find a solution from the FAQs. http://www.tp-link.com/en/faq-900.html

codster wrote Same problem here. I can reproduce the problem quite regularly. Basically, if you only use the wifi lightly it will be fine. But once you max out the wifi, it will crash the router. For...

Okay, then please try the US beta firmware that post in that thread. Here is the download link: http://static.tp-link.com/resources/software/ArcherC7v2_en_us_3_15_1_up(160511).zip

So you mean that when the wired connection drops, wifi network just works fine, right? May I know what's model number of your PC? And what about the model number of wired network adapter on the PC?...

Please unplug the Ethernet cable between the C5 router and the modem. And then reboot the modem (power off then power on, if it has a battery, need to pick out the battery as well) at first. Then...

It's actually a compatibility issue between Killer adapter and Archer C7. http://forum.tp-link.com/showthread.php?94180-Archer-C7-router-crashed-by-Dell-laptop-with-Killer-adapter May I know your...