Handbook of Computer Troubleshooting


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It is a good idea to reserve a few IP addresses for devices you would like to assign static IPs to. These can include the router, some servers, or even certain workstations. If everything was addressed by their IP address, life would be challenging. Is it easier to remember DNS is often referred to as the phonebook of the internet, but it is far more than just a lookup service. Read More is the device that translates the www. You can try this by typing the IP address in your browser window, and Google should pop up!

If you need to access a device on the internet, your router will forward the request to another DNS server on the internet and send the reply to the device that requested it. You can configure two DNS servers in case one of them happens to fail, after which the device will resort to using the secondary server.

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While many DNS servers are operated by ISPs and intended to be used only by their customers, several public-access ones are also available. Generally speaking, your primary DNS server should be your router. It takes 8 Megabits to equal 1 Megabyte. You will generally see Mbps when network speed is being referenced, and MBps indicates the amount of file data transferred per second.

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If you want to download a short video, and the file size is 10 MB Megabytes. Your internet connection gives you download speeds up to 16 Mbps. Now divide the file size 10MB by your MBps 2 to get the amount of time it will take to download the file. It will take approximately 5 seconds to download your 10MB file with an internet connection of 16Mbps. Wired networks have been around since the s. They are currently faster, more stable and less susceptible to attacks compared to wireless networks.

Now we're headed toward a gigabit Internet where all that data will be moving that much faster. Read More. For now, this is sufficient as 10 GbE is relatively much more expensive. This is guaranteed to change shortly as our data demands and internet speeds increase over time. As technology is adopted by the wider market, it also becomes cheaper to manufacture.


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You can view what network adapter your computer has from the Windows Device Manager window. In the Run Command dialog box type devmgmt. The best practice in a home network setup is to have all your wired devices connected to the same network switch to avoid any bottlenecks when communicating with each other. Wireless networks are the most convenient but are slightly more complex to configure and manage.

They are also susceptible to interference from other wireless radios and other electrical and electronic hardware. Wireless Fidelity Wi-Fi is governed by a set of standards which you will commonly see as The character on the end will indicate the theoretical max speed. The problem is is that these theoretical speeds are nonsense, and in real-world scenarios, you never get close to the theoretical speeds.

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One of the contributing factors in never reaching the theoretical speeds is the antennas. While such devices adorn eight antennas, the device being used to connect to them will almost certainly not have that many. Your typical smart device may only have two or three antennas which makes it a bottleneck for the theoretical speed.

The key difference between the two frequencies is coverage versus bandwidth. When you first received your wireless router, chances have you probably changed the administrator login password and chose a cool name for your Wi-Fi. The other settings may have been ignored in the overly complicated dashboard. Other options are just less secure.


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Under no circumstances should WEP be used as it can be easily hacked by a malintentioned individual armed with a laptop lurking outside your house. Next, you should choose a channel. A channel is simply a slice of the 2.

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Most modern day routers will choose a channel automatically. If you are getting slower than expected speeds, a congested channel may be the culprit, especially if you live in an apartment complex with lots of other Wi-Fi routers in the area. It will show you which channels are congested and even make a recommendation on which one to choose for best performance.

Lastly, ensure that the correct Wi-Fi standard is chosen. Most modern-day devices support If however, you have a legacy device, such as a Nintendo 3Ds that is not detecting your Wi-Fi, you may have to enable If your router supports an option for a guest Wi-Fi network, it would be a great idea to enable it. The best part is that any device connected to the guest network will not have access to local computers or files on the main network. Your router treats the guest network as a completely different LAN.

You may even have options for throttling or setting limits on clients connected to the guest network, to ensure your friends are not hogging your lovely internet. At a glance, these are some of the settings you could tweak. Overall, it would be a good idea to make a small change, then run a speed test to see how that has affected your Wi-Fi.

How To Fix a PC That Doesn't Boot - Troubleshooting Tips

Then try the same speed test in a different part of your house. Making too many changes at once may lead to being unable to isolate the problem area. There is a lot going on when it comes to networking. If your network is quite complex, it may be a good idea to have it drawn out, to help troubleshoot any issues. Everything is entirely drag-and-drop, and the user interface is about as simple as it gets. From there you can join items and just double-click either on them or on the canvas to name them. Our diagrams in this article were done entirely on draw.

In a nutshell, it states that the simplest answer, or the one with the least assumptions, is usually the correct one. This is often the case when looking at problems, especially when it comes to technology. When diagnosing network issues, it is extremely rare for the problem to be a hardware one. The best way of going about networking issues is using the process of elimination.

As mentioned above, making too many changes at once can make diagnosing a problem much more difficult.

Handbook of Computer Troubleshooting by Michael Byrd, Jim Pearson, Robert A. Saigh - ruddistgogarfio.gq

You can use this guide as a top-down approach. The guide starts with suggestions on what to try first before moving to the next step. If at some point you notice the behavior is unexpected, there is a possibility that your problem is at that point. Oh no! That fateful day where you open a browser window and nothing loads.

Now, before things begin to get a little heated, there is a good chance you can solve this in a few seconds. Right-click on your network connection and select Disable. The adapter will turn grey, and after a few seconds, you can right-click on the device and select Enable. As you can see, using the process of elimination, you can quickly get to the bottom of where the problem may lie.

Restarting your devices will in most cases solve the issues. With each component, the current, inductance, resistance and voltage of each component needs to be computed and contrasted to each signature of the faulty printed circuit board to determine what is wrong with the latter. Clear away deposits of dry or partially worn off solder if any is present on the faulty PCB.

This will refresh the points and make it easier to inspect the signature. With the numerous amount of tracks on a printed circuit board, there is a high likelihood that certain tracks will incur damage during the examination process. To remedy any damage that results during these steps, jumper wire is a helpful tool for track repair.

During the final step, each pin is tested to determine its functionality. If the output and input of a pin conform to the specs of the data sheet, that means the pin is in good condition. If not, it must be removed. When a device is disconnected from a PCB, pads will often get damaged as a result.

This is because the PCB and circuit frame library share joined traces which are cut from one another when a device is removed from a printed circuit board. When you sit down to fix a printed circuit board, you should have the following materials at hand:. Use isopropyl alcohol to clean the affected part of the PCB. Once the area is clean, dry away the alcohol with compressed air. With isopropyl alcohol, wipe the spot and blow it dry with compressed air. Alternately, you can use a cloth as long as it has no lint.

Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting
Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting
Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting
Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting
Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting
Handbook of Computer Troubleshooting Handbook of Computer Troubleshooting

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