tplink wrote Actually the V3 and V4 versions share the same firmware. And the biggest differences between them is the logo (V3 version use the old logo as TP-LINK while V4 use the new one tp-link)....

Hi, Running a radio emitter without antenna (or with wrong antenna) has never been a good idea because it's very risky for electronic components. You should ask your question to TP-Link support to be...

Hi, Did you disable the DHCP server ? Have a look : here !

If you see the signals around but not yours, probably the Archer C7 is no more emitting. How are the wireless leds ? off or blinking ?

Hi, You should test the wireless signals with a software like Wi-Fi Scanner for Windows or another scanner for Android tablet. The goal is to identify if the router is still emitting or not...

Hi, It seems bricked. Try to ping the router just after switching on, to see if the bootloader is dead or not. If the ping is not responding, you should probably open a ticket to the TP-Link...