It becomes abnormal after thunder strike? If reset won't help, it should be faulty then.

Try to install it on a different PC or buy a new adatper.

You can know more about WR841N using the emulator. I didn't find related settings as you expected. http://www.tplink.com/resources/simulator/TL-WR841ND_v9/Index.htm

Check status of local area connection and wireless network connection if the connection drops. Try to login its web interface. If it won't work, check Status of all lights on its front panel. When...

TL-WR841N is working an access point? If so, to block youtube or online game should be set on the main router. Besides, even WR841N is working as a router, you may not be able to block youbube as it...

WR841N cannot get 100M, which is limited by its NAT Throughput. http://www.tp-link.com/en/article/?faqid=465 Compare the speed like below: (1) Bypass the TP-LINK router and hook up computer directly...