what is the operating system of your notebook? is is connected fine to regular Wi-Fi without tp-link extender?

what is the model number of your extenders? are they powerline or normal Wi-FI extender? for normal Wi-Fi extender, turn off the other extender while you are configuring one extender. so it won't...

which password do you mean? login admin or wireless password? if you forgot login password, you can only reset the router. for wireless password, you can login tplinkwifi.net to change it....

you can try this firmware recovery http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitz

you can use inssider to scan the available wifi near you. Then avoid the channels that other people are already using.

try email tp-link support and ask for suggestion. babak1 wrote unfortunately, I have the same problem too ------------------------------------------------- طراحی قالب وردپرس دیجیتال مارکتینگ بک لینک...