Dear friends, The issue resolved by itself. It seems, there was some problem with the Broadband connection at the exchange level. Many thanks for all your replies and help. With best wishes to all.

jimasek wrote Please enter in DHCP Settings DNS addresses from your ISP. The router is working and I am getting WiFi but not getting internet, specially Facebook etc and e-mails.

jimasek wrote WR740N is connected by WAN port to ADSL Router? Yes. That's right. It was working very well when I first installed it.

Region : India Model : TL-WR740N Hardware Version : V4 Firmware Version : ISP : MTNL I have a PC connected to an ADSL Broadband connection and a TP Link TL-WR740N V4 Router. All was working well and...