If you intend to remove a virus from removable disk, you must keep your data backup in CDs or DVDs. It is important for you to buy good quality DVDs in order to keep your data safe because if you are going to remove any virus manually, you data files may get affected by it.
You have to search the viruses thoroughly as mostly they resemble the names in your system files. Some viruses spread themselves in multiple folders. Therefore, you have to delete them from the Windows Registry in order to completely remove them from your disk. For instance, you cannot find the ‘SpyWorm.exe’ file in your programme folder because it is there will another name. So, you have to erase it from Registry.
You can also find the virus by going to the task manager and then clicking on ‘Processes’ tab where you can find the name of the file containing malicious element. You have to look very carefully as some viruses will be there in disguise of system files. After finding the virus, click on ‘End Process’ button which will shut it down for the time being. Now, you should disconnect your computer from the internet as some viruses can turn on after data transmission is recommenced.
Now, delete the virus from your computer programme and system files. In addition, you will have to delete the similar files too in order to make yourself free from the virus.
Then, delete any registry keys which might be created by the virus. Editing the Registry is the most crucial step as a wrong move can cause a lot of trouble.