If your cable or DSL Internet connection goes dead, don't bother trouble-shooting on the computer. Usually the problem is that your cable modem or router/base station have stopped communicating. You'll either see a message in Safari saying "You are not connected to the Internet" or that the web site couldn't be loaded. Or perhaps you can't get email to work.
This is one page that makes sense to print out. When you need it, you won't be able to come here to read it!
- Shut down the computer or put it to sleep.
- Turn off the cable/DSL modem and your router/base station (if you have one). The easiest thing is to just pull the power cable from each unit. (Don't mix them up!)
- Turn the modem on again.
- Wait a full minute for the modem to restart. Trust me here: if you move to the next step too soon, you'll often have to start the procedure again. (If your cable modem has a ready or online light, you can proceed when that is lit solidly. If it's a DSL modem, wait for the DSL light to be solid.
- If you have a router or base station, turn it on and wait another thirty seconds.
- Wake or start the computer. If you're using a wireless base station, you may have to choose your wireless network again from the Airport menu (next to the time display at the top right). After about 10-15 seconds, you should be able to get online again.