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Disclaimer: Malicious software like viruses, worms and Trojans are serious. They can damage your computer's operating system files, steal personal data and corrupt other content on your computer. Due to the nature of malicious software this Instructable isn't a guarantee that you can recover lost or damaged files. This only provides information on how to download and use Windows Defender Offline to help remove a virus from your PC. In some cases this maybe the only step or a part of several steps depending of the severity of the issue. If you aren't sure if a PC is clean please seek the help of a professional computer repair service.

Introduction: So your computer isn't operating correctly? There is a possibility you may have a virus. Some things to look out for are system slow down, lock ups, windows pop-up that you did not open and even the system shutting down. Here's a step-by-step on how to download Windows Defender Offline, scan, possibly detect and remove the virus.  This software works on computers with Windows XP Service Pack 3 or above installed.

List of materials:
-A connection to the Internet on a "clean" PC with a USB port (used to download the software)
-A USB drive larger than 1 GB

Step 1:

1. If you believe your PC is infected with a virus, please take it off of the network you are connected to now! Taking it off of the network reduces the likelihood of it spreading to other systems on the same network.

2. If connected via a network cable remove the network cable. If you are connected to a wireless network, turn off the wireless card    on the infected machine.


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