How to Prevent virus attack

We know that todays there is a lot of viruses spread from any country by using internet from low to higher damage to system.Where it can damage or even erase a critical file in system directory.All antiviruses have an internet guard.But Not all people used antivirus to their computers.So someday if your friend use a falsh drive or external HDD that has been contained virus plug it to your computer.and click it....then your computer suddenly shutdown and won't enter to windows. Wha..laaaa.....

So to avoid it we have to make a prevent against of the virus attack.Some antivirus have a selfguard but it can't guaranteedthat it can't be broke by some new viruses. I suggest a manual way.

This is the steps to prevent it manually:

1. Show hidden fileBefore you plug an external HDD or flash drive to your computer.First you have to make the hidden file showing by uncheck"Show hidden files and foldels""Hide protected operating system files (Recommended)".
   
2. Plug your external HDD or flash drive.After you plug it and windows read it. Don't open or Explorer it directly.Use tree view in windows explorer to open it.Just click your external HDD/flash drive to expand it.
   
3. Find "autorun.txt".If you see "autorun.txt", open it. See what applicaton will run if we click it.Most of viruses use extension ".exe" or".pif".
   
4. Find the application and delete it.When you find the "applicationname.exe" or "applicationname.pif" delete it manually and the "autorun.txt" too.

After you finish RePlug your external HDD or flash drive.