Firstly, close the computer and the router, and remove the feed cable from the router. Wait for 10 seconds, reconnect the feed and turn on router. Wait for a few seconds more, and then open the computer. Your problem should be solved. When your router begins to communicate with the ISP provided by your internet company, you will get an IP address, using a router operation called DHCP. This IP address is unique and characterizes your computer on the Internet. It is a total of four numbers that are separated by periods (eg 73.123.78.156) and it's the address where the other computers will go in order to communicate with yours.
 
In order to make all the essential adjustments in your router, you should use some programme that is included in the package (mainly for the USB routers), or you can just type the IP address of your router in an Internet browser (for ethernet routers).

Speed: The obvious way to see the speed of your broadband connection is to read the official facts from your supplier. These figures, however, are only in theory and are hard to achieve in real life, due mainly to natural phenomena like the distance of your router from the local ADSL access centre, as well as the "noise" on the line caused mainly by obsolete wirings. In general, the real speed will almost always be less than the theoretical. To check the speed, go on www.thinkbroadband.com/speedtest.html. This particular test will need two to three minutes to complete.

Connections and adjustments: Most modern computers contain a network card where you directly connect the router. You will need a cable type Ethernet (also known as CAT5).

Resolving problems: If you have made suitable adjustments in your router, you should be connected to the Internet. If this doesn't happen, there is some "first aid" advice you can follow to locate the problem. Firstly, check all connections and cables to ensure they are placed correctly. Look at the lamps on the router. There should be one indicating that the appliance is on, another for the ADSL line and a third to access Internet. The lamp for the ADSL line shows that the router has "noticed" correctly that you are connected via ADSL - if it's turned off, then your line has a problem. The access to Internet lamp is more related to the adjustments of your router. If it's off, then very probably you have entered the wrong code or it's not correctly adjusted to the router.