Sunday, 25 July 2010

Ubuntu Installation from Ubuntu Live CD

The Linux Ubuntu installation is pretty straightforward. Presently, the entire Ubuntu 9.04 distribution is compiled into just one installation CD. To get the Ubuntu ISO file, simply follow this link. To install Ubuntu from a CD, you will simply need to burn the downloaded ISO file onto a CD. After that, you need to set your computer to boot from a CD drive and let it boot. This is the first screen that you will see.
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You can now select the language for the setup that you prefer.














Now, you have a menu that gives you 5 different choices. The first choice is to boot Ubuntu from the disk without installation. This will leave the hard disk untouched. The second choice is to install Ubuntu on the computer. The third choice is to check the hard disk for errors. It is recommended to perform this check because it takes care of any possible bad sectors on your disk. The fourth choice will be to test the memory or RAM. The fifth choice would be to boot as usual from the hard disk.

Now let us choose to install Ubuntu.



The usual language request


Location request


Keyboard request. If anything is default, leave it as it is.


The process is simpler is you don’t have partitions on your hard disk.


Some data input.


Verify everything before proceeding.


Formatting


This is how the Ubuntu desktop looks.

Repairing Packard Bell EasyNote power board

I inspected the power adapter and green light was flashing. I checked resistance of power socket of laptop which was showing just about 5 ohms. This was my first though that there is a short circuit somewhere inside the board.



As you can see I have soldered out the power socket and some components. The main fault was short cirquit between two layers near power socket. By the way this PCB is with 4 layers. I stripped down a part of first layer and in the picture you can see a second layer.
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Sunday, 4 July 2010

How to Fix a Computer

In this guide, we shall go in a step-by-step manner about how to fix a computer. This guide is almost the same as another one we have, expect that here we will cover the hardware of the desktop computer in more detail. The other article speaks briefly about both the software and hardware aspects of your computer.

The best way to fix your computer is to test it and then retest it until you have found out what’s wrong with it. There are various testing tools available on the Internet for free download. Whatever tool you use, you will need a step-by-step guide to use it correctly.

You must begin by testing the memory. After a lot of computer repair jobs, I would recommend that you start here. By testing memory, you will test not only the memory but also the processor and partially the motherboard even. It is because in this memory testing process, different components of the motherboard are involved.
Recommended software for memory test is Memtest.

If you own a computer, you will find that knowing to fix it saves you a lot of time and money. Now, if your computer is running slow, it is easier to find where the fault is. Mostly, it lies in the antivirus program that’s involved. Users have reported that the Norton Antivirus demands a lot of power from your computer system. There are several other similar antivirus and antispyware programs that can slow your system down.

Another cause could be that there is a virus or two on your system itself. This leads you to a cycle of problems—to remove the virus, you will need to install an antivirus program but a bulky antivirus application could also slow your computer down.

A faulty hard drive could also be making your computer run slow. If your hard drive is faulty, it might contain one or more bad sectors in it which the computer cannot read or write into. As these sections tend to spread, soon more of your hard disk is likely to be damaged and have areas from where you cannot properly read data. On account of that, the computer functions slower.

We explain here how you can test the hard disk in your computer.

There might be other troubles inside your computer, mostly hardware causes. Hardware components of desktops are definitely different from those in laptops. Even if one of these components develops a fault, your computer might not start at all. You will commonly find faults with PCI cards and TV tuner cards. The DVD drive is also a common problem area. These devices tend to develop faults in their laser systems after you have been using them for a particular length of time. The initial symptom of such a fault is that your devices fail to read the DVDs and CDs. Sometimes, they may not even be recognized at all. If any such thing starts happening, it is time to check the drive itself or the cables going to the drive.

Another cause for the fault may be the presence of faulty drivers. That can be easily rectified by getting the latest drivers from the manufacturer of the hardware.

Step by Step Guide How to Make UBCD4WIN Disk