how do virus attack?

Here is the idea. . .if you copied that cd years ago without any virus detection or your computer did not detect anything then it is safe. No matter how long the cd is. About virus attack, there are types of virus, not specifying how many but as far as I encounter, there are virus which is set as hide and can be seen through folder option. But the problem is they are going to hide your folder option. . .lols. in other words, the virus creator is wise. Example of this virus are autorun.inf, recycler, worm, adware, trojan, and .vbs files. There are virus also which can be seen and can be deleted in the command prompt like jaker(aikikyu virus). These viruses has its own symptoms, the worse symptoms is worm. . .your mouse can't move and your screen stuck. . .2nd is the jayker, it weakens your computer immune system that other viruses can easily enter your computer.

They spread from one file to another.They destroy the original files on the system.They damage the windows files.They change the words we type and even move them.They even restart the computer frequently.

i can only say the computer colapsed or stocked up.i had that many times but i am glad my hubby knows how to fixed it.

Pretty much. Its a good habit to scan your archived CD before using it. Or just make sure to keep your antivirus enabled when accessing these files. It shouldn't be a problem for most antivirus detecting these virus since its old.