There are few people who think that the best way that could be handled in order to protect the computer system is to stay away from internet usage and online tasks. But practically, these are impossible in our everyday life. Hence, the best way to protect the system is to do the free antivirus download so that the price factors will not affect us. The following tools could also protect the system in a great way. Let us have a rough note about all these in the following. First of all, we have to download any tool which would clean up the computer thoroughly. The recently visited websites, the programs that are used recently, etc will be cleaned with the tools. The Avert Stinger is one such tool which would clean up the entire virus in the system. We can then combine the entire antivirus that we have in system which is for free totally. We should get the free antivirus downloads which are best in the market. The Spyware doctor is the one which protects the system greatly. The browsers like the Firefox and Chrome are the ones which would best suit for the antivirus download for our personal computer. We have to give lots of importance in checking the functioning of these downloaded files. Only then we can be aware of the presence of virus in it. The only way to have all the stored data in our computer to be in a safe way is to have constant vigilance of it. Apart from all these, there is a common practice of having a back up of all stored data in order to save them from virus. But if we are installing the antivirus, then this step could be avoided. These are some of the tips about the tools that could be used for our personal computer.