Your computer is infected with a computer virus is one of the biggest nightmares. Viruses can erase data from your computer, duplicate it, send it to anyone in your e-mail address book, or even render your computer inoperable.

A professional computer repair service can help you if you experience any of these problems. However, you can take steps ahead of time to prevent this from happening. Install antivirus software on your computer and on any computer that has access to your network for internet security as well.

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Make sure that the antivirus software of your choice can be updated whenever a new virus is found, then make sure that the device is updated. You should update your antivirus software regularly and as soon as a virus update is available.

Computer viruses can spread quickly and attack without warning. It would be a shame to lose data or network if all that protection was just to install virus updates.

If you run a business and some employees use their laptops from home or from a company they take home or travel with, make sure their antivirus packages are up to date too.

It's also a good idea to protect your gateway with a firewall. This applies to PCs, business or home networks, as well as laptops used outside the office. This laptop, used by households or hotels, is not protected by a corporate network firewall and must be installed directly on it.