Computers created a revolution. Every action has an equal and opposite reaction. This is exactly true in computers and just like operating systems there are some un-wanted programs which can damage these operating systems. Those unwanted programs are called as Viruses. It is a program which is designed with a main purpose of affecting the place where it goes to. This program not only damages the software present in the computer, but also makes it difficult to operate in run time.  Viruses are heavy programs which need special attention. Internet is the common medium which is used for spreading computer virus. If your PC is connected to the internet then there are more chances for your system to get effected. A highly recommended course of action is to use free antivirus software tools.

Most of the hackers utilize such harmful programs to detect the information available on your computer. If your system does not have a free antivirus software, then the infection which gets loaded to your system damages the main application files of the software and sends those data to the hackers. They damage the booting sectors of your operating system and makes its operation vulnerable. Those people who send computer viruses to your PC may have their own intentions. Some are created out of boredom while others are created to show an impact on an individual or an organization.

Before understanding the cure for virus, we should first know the common sources used for spreading this harmful software. E-mail is the common way of spreading a virus and this is critical to know. The e-mail sent by hacker’s looks like it’s from some one whom you know. Or the email sent to you will be something like: “Click here to grab your gift”. If you get attracted to it and click on that link then, the virus gets loaded to your system and corrupts main files of your OS. Besides mails, websites are also used by hackers to spread computer infections. Special messages pop up on websites giving out messages like: “Your computer is affected by infection please click on the link to remove it”. If you believe that word and click on the link then the maliciously programmed file gets loaded on to your system and causes serious damage, before you come to know about it.

One property is that the computer virus gets loaded into the system within less time. If you wish to cure loading of such an infection onto your system then it’s highly impossible. However, you can prevent a virus from loading onto it. Here are some of the procedures which can help you in preventing it from loading into your system.

First thing you should do to stop any malicious applications from getting onto your system is Install free antivirus software onto your computer. There are many standard companies in the internet which allow you to download these software’s for free. If you wish to buy the full version then you can get it on the internet for money. Full versions have better features to detect and erase the computer virus completely from your PC. Companies like Symantec, McAfee, and Trend micro are most powerful anti virus agents in the market. Anti infections software sold by these companies have powerful applications which can prevent your system from getting infected.

Next thing you should do to prevent this virus is by using a genuine operating system. If you are using an operating system which is pirated then there are more chances for your system to get infected. The reason behind this is: “Genuine operating systems, don’t allow un-wanted applications to enter into your system”. Some of the powerful operating systems available in the market are: Windows Vista, Linux and UNIX. UNIX is the best software preferred by most of the top companies because it provides security at five core levels. It is fact that most harmful infections generally go into the registry of the operating system and damages the user interface. When user interface gets damaged then the booting files stop functioning making the OS stop its function. UNIX operating system provides a support to the kernel and does not allow virus to go into the core level. This ensures that UNIX OS does not get any damage from an infection.

Next thing you should do to prevent a virus from entering into your system is you should not click on mails you receive from un-disclosed recipients. When you get a mail from a person whom you don’t know, check it with an anti trojan software. Once you check that link, click it only if required.  

Out dated security software does not show more affect in clearing a  virus. Hackers are more intelligent than common people; they use powerful programs to affect your system. Your free antivirus software should be original and it should be updated whenever required. You should also see that the database of the application is updated correctly. When this database is updated properly then your security program removes all un-wanted files from your system and sees that its performance is proper.

You should be safe from all sides, sometimes a computer virus can enter from your friends USB drive or from a CD given by your friend. Always the better option is to create a back up. You should use original software and keep the original CD given by that company in a safe place. Whenever you back up important files, though the system gets damaged you can format it and get back the lost data again. Now you may get a doubt in your mind. What if my system is already affected? What should I do to remove it? First of all you should not panic. When you notice that your systems is rebooting continuously then get the help of a professional software developer or software consultant. He will thoroughly examine your problem and provides you suggestion for solving the problem. If you take his help, he ensures that your data is saved to a large extent and the corrupted files are removed permanently without damaging your system. Always have a hope for the best and try to be safe from all sides so that these deadly viruses won’t come in to your computer.