The Trojan horse virus is a computer virus that attaches itself to certain files and programs downloaded from the Internet. Once it finds its way onto a computer, it attaches to other files and multiples. This makes the computer slow down, and some users may even find that they can't perform certain actions. The only way to fix this is to manually remove the Trojan horse virus by removing all of the infected files and programs from the computer.
- Skill level:
- Moderately Easy
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Disable the System Restore feature on your computer. If this is still turned on, the system will restore any deleted files, including those infected by the Trojan horse. This can be done by going into the My Computer file and looking for the Performance option. Then select File System, Troubleshooting and Disable System Restore.
Turn on the computer and run it in safe mode. Restart the computer and when the words begin appearing on the screen, press the F8 key. This takes you to a new screen, where you'll select the safe mode option. Let the computer start as it regularly would before you continue.
Go into the Control Panel by clicking on the "Start" button at the bottom left-hand side of the screen and looking for the Control Panel. Select the Add or Remove Programs icon. The computer should then show a list of all programs existing on your system.
Look for programs that include Spyware or adware on your computer and select the Remove program option. Many users have found it helpful to look for programs that they didn't install and those that were installed when they downloaded a game or other program onto their computer.
Open the Windows System folder and delete all files that include the Trojan virus extension. Go through the list twice to make sure you removed all virus files. Then restart the computer in normal mode and check the folder again. If all the files are gone, you'll be ready to move on. If there are any remaining, remove them and restart the computer.
Tips and warnings
- Consider investing in up-to-date virus protection for your computer. These programs will automatically find and remove viruses.
- Be careful about downloading any type of software directly onto your computer from the Internet. These programs can include viruses that disable and severely damage your computer.