Anti-virus software trial

Buy now instead of anti-virus software, it would be a lot of people to try the trial version.
Differ slightly depending on the manufacturer, it seems that many of the 30-day free trial.
However, you can install a trial version of anti-virus software, what will we do that will be determined.
Out of the question but your computer does not work at all, if you purchased your computer recently, you probably would not have a problem.
This means that you do not have to compare more than one anti-virus software.
Because it is difficult for ordinary users can understand the difference.
From such a viewpoint, many anti-virus software on your PC trial version is installed from the beginning.
Of course, anti-virus software maker PC manufacturers and contract, I have to pre-installed.
People to uninstall the anti-virus software pre-installed, when you try to install another anti-virus software, it would be someone who is familiar with the PC.
Or, it is the person you have a license for anti-virus software on a PC that has been previously used.
Someone who is familiar with the effects of anti-virus software on your computer is well understood.
However, people are not familiar with, because we do not know of a virus threat, he do not understand the need for anti-virus software.
I have seen many people who have been using the trial version without updating with from the beginning to the PC.
I am not known to be out-of-date anti-virus software is useless.