Connecting To A Wireless Network
Checking that all your wires are plugged in at the router and from the plug is one of the first things you should do – provided of course that you have access to them. Verify that the power cord is connected and that all the lights of the router and cable/DSL modem are on. This may seem like a ridiculous suggestion but you should never disregard the obvious. You'd be surprised at how your configuration can be perfect, and after a while of playing around with settings you realize that the network cable leading from the router to the cable modem has come undone slightly.
You will also want to check that your wireless network adapter is switched on. Some laptops come with a small blue or red button on the side while others require you to enable it from the operating system. In Windows, go to device manager and check that your wireless network adapter is enabled. If you have a PCMCIA or USB wireless adapter try removing it and then re-inserting it while Windows is running so it will re-detect it. The lights on the adapter give an indication of whether there is a problem. On mine, I have two lights; one is orange to signify that the PCMCIA card has power and the other is green to show if a connection has been established. A blinking green light means that I am not in range of a wireless access point or there is a problem with connectivity, whereas a stable light means a connection has been established successfully. Take a look at your device documentation as these sorts of details will vary with each product.
