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Friday, March 26, 2010

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How To Remove Virus From Computer on Windows

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Many people have frustrating experiences where their PC is infected with computer virus, and they need tools for virus removal. If they are technical, they might try to remove virus themselves only to make it worse

Otherwise they may buy and use antivirus software and successfully remove the virus.. or NOT. So I am putting together this tutorial guide to help people remove virus from computer. Note this is strictly for computers that have Windows operating system on them. I am no expert myself but with a computer science background and expertise in how computers work, I believe I'll cover the topic well. Also, I've helped my relatives remove computer virus that cannot be killed by antivirus software. It's truly FREE virus removal Learn it and you'll be able to remove virus or any trojan and spyware.

Before we jump into discussing how to remove virus from computer, Let's get some definitions straight first:

A computer virus is simply a computer program that does bad things to your computer.
A virus process is the running instance of a virus. If the purpose of the virus is to pop up ads, it will do that at some time intervals (e.g. every 5 minutes) or it is triggered by some action on your part (e.g. close a Internet browser). If the purpose of the virus is to delete everything on your C drive, then it will do that the first chance it gets, and you will need to reinstall your operating system. Talking about frustrations
A virus file can be any file that contains the virus. Most commonly the file is a Windows executable (a file that ends in .exe) or a dynamic linked library (a file that ends in .dll). This is the file you want to delete to remove virus.
Note that the core system DLLs are stored in C:\windows\system\ and C:\windows\system32\. In general you shouldn't see any new DLLs being added to the folder, unless you install software. In general viruses lives in one or both of these folders.
Before you do anything, download Process Explorer (Google it). It is informative about the processes that are currently running on your computer. All you have to do is double click the executable to run it. When you run it, you need at least the following columns: PID, Command Line. If you don't see any of them, right click on the column bar and choose "Select Columns..." Then check the columns you want and click OK.

If you run antivirus applications such as McAfee or Norton, you can run it and they probably can scan your computer for viruses and delete them. Or you may see a pop-up window saying a virus is found and what you want to do with it. The trouble is sometimes they say that the virus is found but they are unable to delete it That just adds insult to injury. This is most likely due to the fact that the virus process is already running, and therefore you cannot modify any file that the virus process depends on. Sorry, operating system rule..

Here's what I suggest you do to remove computer viruses
* Identify virus process
* Stop virus process
* Delete virus files, and sometimes Stop and kill
* reboot your machine
* Protect your computer
* FAQ

Without further ado let's get right down to killing those nasty computer viruses!

By the way this article has been translated to Croatian and Polish!

Identify Virus Process ▶
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