fotodamaris wrote

Why can not I access the Internet after connecting the TP-LINK router to my modem
http://www.tp-link.com/en/article/?faqid=138
How do I install TP-LINK router to work with ADSL Modem
http://www.tp-link.com/en/article/?faqid=143
How do I install TP-LINK wireless router to work with DSL Modem (PPPoE)
http://www.tp-link.com/en/article/?faqid=86

jimasek wrote

Now, give me screenshot from router Status, when you connected TP-link.

fotodamaris wrote

This is the second time Jimasek has asked for a screen shot and you haven't provide it, we need answers from you too.
Swampwiz if you have a LAN cable not a modem, factory default the 740 http://www.tp-link.com/en/article/?faqid=83 and connect LAN cable to WAN port the blue one, and survey on your computer a SSID Tp-LinkXXXXX connect and check if you can surf internet.

No luck change ip to your 740 http://www.tp-link.com/en/article/?faqid=67 to 192.168.5.1 and do the same

Still no luck set 740 as AP http://www.tp-link.com/en/article/?faqid=417 before in your computer connected to internet check in wire adapter what sub-net you are getting from ISP cause that sub-net is the one you gonna use, the third segment of the ip is the sub-net example 192.168.5.1 the number 5 is the sub-net
in this case you do not use WAN port you are going to connect your lan cable to any of the YELLOW ethernet ports.

jimasek wrote

http://www.tplink.com/en/article/?faqid=138 - I like to see Status Page when you have connection to WAN port.
Sorry but your problem description is very chaotic