Prepare Yourself
This job requires a calm mind, although this situation makes you panic. For example: deadlines are waiting, users are complaining to the boss angry. However, we do not get carried away. Rest assured that you can certainly solve the problem. Moreover, the network was able to function. The question is why not now? There must be the cause and you will find it.
Create Documentation
Whatever makes your network down, there is a possibility it will happen again. Are you going to remember what happened and how to fix it? Write down the symptoms you can see, the error message you receive, the test you’re doing and what you do to fix the problem.
Perform Physical Checks
Most of the problems causes on the network that previously always associated with physical functioning. Take time to check the following things: Is the network card installed properly? Encouragement from the cable network could make the network card a little loose, especially if you don’t fasten it with screws.
Check the LED light on the network card. The green color on the ethernet card shows that he is connected properly to the computer and network. If the LED blinks when you receive or send data, it is also auspicious. Perform the same checks on the hub, cable modem or DSL. While checking, make sure all is connected properly and getting enough style.
Replace the cables to ensure they are functioning. Maybe the cable is broken for no apparent reason, and the new network could function again after the cable replaced. Keep in mind, the LED may remain green, although one or more wires are no longer conduct current. You should be more watchful, chiefly when the cable is too bent. Is there a large motor electric that run close to the ethernet cable? Electromagnetic waves can disrupt the network signal. Make sure the problem exists on your side. Contact your ISP and see if there was a problem on their backbone.
Try Rebooting
Found no problem with the physical connection? There may be errors of software. Try to restart all systems are problematic. Often this can fix the problems.
Create a chronology of events
If the network is still down after you do a physical check and reboot the system. Try to remember again what events occur before the last time the network function? Did you restart the server? Is the power goes out? Maybe one of these was the cause of the network down.
Hopefully these five steps above have been able to resolve your network problems. If still having problems follow part 2.