If you just want to extend your internet connection over WiFi, just take the wire that comes out of the modem that the ISP has given you and plug it into the WAN port of the wifi router.

Try http://192.168.0.1

This is one of the cheapest routers out there. All we want is that it should provide a stable connection.

Does turning off the firewall in the router help? Also, check the firewall settings on both computers. IIRC in Windows 7 ping (ICMP) is blocked by default and has to be enabled for this to work. If...

I'm not sure I understand this fully, but how many devices do you have connected to the router? Try turning off all the others and see if that makes a difference to the connected speed indication. I...

What is the speed that your ISP gives you? This 150Mbps is only between your devices and your router. Beyond that, your ISP and current internet conditions set the limit on what throughput you get....